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AGRONOMY / HORTICULTURE 338 – SEED CONDITIONING LAB (Soybean) ISU Seed Science Center

August 31st, 2017

AGENDA: Tour of Seed Conditioning Facility (soybean and wheat seed demo) Laboratory Exercise (equipment operation & sampling) Discussion & Data Review

OBJECTIVES: Review and analyze typical soybean and small grain seed cleaning processes. Equipment capacity, discard percentage, and other parameters will be determined at critical points throughout the process. Historical initial product information will be provided for further analysis and discussion purposes. EQUIPMENT: Stopwatch, plastic containers, “zip-loc” bags, multiple platform and bench type scales. Safety glasses and disposable earplugs for hearing protection are strongly recommended. Disposable dust masks are also available if desired. LAB PROCEDURE: Larger classes should divide into four groups and rotate between locations to obtain required data. Partial historical sample analysis data for some locations has been provided on the attached data sheet. The various equipment locations are listed below: Station A: Pilot Plant Review and Demonstration The equipment listed below will be reviewed at the beginning of the lab to demonstrate a typical soybean seed cleaning process. During operation, groups should rotate in sequence through the stations listed, observing the discard and clean seed product streams from each operation. Where applicable, timed samples have been collected in advance for subsequent analysis.

a) Air Screen Cleaner (Crippen H-434) The cleaner is used to remove foreign material and over/undersized product. When cleaning soybeans, the capacity is typically limited by the ability to remove splits efficiently using slotted screens (screen positions 2, 4, and 5).

b) Spiral Separator (Profile Industries dual core enclosed spiral) The discard stream from the spiral will be spouted into a barrel on the lower level near the motor control center. If desired, operation of the spiral can be observed upstairs during the GLCPS treater demonstration. Additional testing will be conducted using a newer rotary spiral design.

c) Gravity Separator (Oliver GVX-1020 Voyager) The gravity separator will need a few minutes to stabilize after operation begins. Feel the level of fluidization and observe the motion of lightweight seeds and contaminants on the deck during operation.

d) Color Sorter (Sortex Z1+B) The color sorter has been preset for removal of “dark” and “undersized” seed. Visually inspect hand samples of the “accept” and “reject” streams based on color, shape, and combined separation.

e) Continuous Flow Seed Treater (Gustafson GLCPS) Basic seed and chemical metering components for a computerized seed treater will be operated for this demonstration. Tap water will be utilized to avoid potential chemical safety and contamination issues. The basic components and a few of the menu screens will be briefly reviewed prior to operation. If desired, hand samples of the “treated” seed can be collected to observe product coverage. Note: The GLCPS treater components may not be fully operational for this lab session.

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Station B: Small Grain Cleaning Demonstration An air-screen cleaner, indent cylinder, and gravity separator will be operated to demonstrate a typical wheat seed cleaning process. Typical small grain seeds are elongated and tend to “up-end” on cleaner screens, so separation frequently requires length grading operations in addition to the air-screen cleaner. Density differences are also frequently much larger than for high quality soybean lots. Separate samples may be used at each station.

a) Air Screen Cleaner (Westrup LA-LS) The air-screen cleaner includes partial and full length scalping screens to remove oversized material, followed by a full length sifting screen for removal of weed seed and/or broken wheat. The initial and final aspiration columns share a closed circuit air system and a common discard outlet pan.

b) Indent Cylinder (Carter-Day batch indent) A lab indent cylinder separator can be used to remove either short weed and broken seed or long weed seeds and sticks, based on the indent size selected. Most two stage operations start by using the larger indent size to lift the seed from longer stems and sticks, then a smaller indent to lift broken or short seed from the seed lot. Production plants use larger continuous flow indent cylinders.

c) Gravity Separator (Heid GA-30) A gravity separator in the tower will be used to

demonstrate wheat seed density separation. “Clean” product should be staged in the inlet hopper prior to the demonstration. The light fraction will typically include low density wheat seed and possibly oats and/or ergot.

Station 1: Cleaner Screen Selection This procedure uses a riffle divider, hand screens, screen shaker, and electronic balance to select screen perforation sizes prior to cleaning operations. Each group should select a different “bin run” soybean seed sample for subsequent analysis. Two independent screen stacks will be used to determine the appropriate scalping (round hole) and sifting (slotted hole) screen sizes: Note: Groups can work in pairs, with one group running round screens and the other running slotted screens for the same initial sample to reduce time requirements. a) Select an "as harvested" soybean sample and record the sample number on the data sheet. b) Use the riffle divider to split the sample into two representative fractions for testing. c) Place a sequential stack of round (or slotted) hole screens in the vertical screen shaker. Be

careful to align slotted perforations crosswise in the shaker. d) Add the seed subsample, latch the door and run the shaker for approximately 3 minutes. e) Transfer the contents of each hand screen to a plastic weigh pan and determine each net sample

weight. A large rectangular tub can be used to help reduce spillage. Record the net weights on your data sheet and add comments regarding foreign material or low quality seed in each screen fraction. A spreadsheet will be used to calculate sample percentages.

f) Review the contents of the screen samples and select a round hole screen size for removing oversized product and a slotted screen size for removing undersized product. (Discard seed ABOVE the round hole and BELOW the slotted hole screen sizes.) Record recommended screen size selections on the data sheet provided.

g) Return the various seed fractions to the original sample container and re-stack hand screens.

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Station 2: Cleaner Sample Analysis Timed samples were previously collected from clean seed and discard product streams. The samples need to be weighed and sieved for splits to estimate the feed rate and split removal efficiency for this operation. A larger sample of the clean seed has been obtained to help detect relatively low split levels. A mechanical screen shaker will be used to separate splits from the discard samples but a belt separator will be used to concentrate the splits for the clean seed to save time and permit concurrent operation. Note: Each group will run 1-2 samples & share data.

a) Record the weight for the clean seed sample and transfer the product into the Westrup laboratory belt separator inlet. Start the belt and visually check that a few oblong seeds are being carried over the top while the round seed is passing down the belt into the lower pan. Allow the belt to run during subsequent screening operations.

b) Record the weight of the scalping and upper air discard samples. c) There are four discard samples to be analyzed for splits, including the “thrus” from the

10/64” slotted screen (position 2), 12/64” slotted screens (positions 4 & 5), and the lower air liftings. Record the initial weight of each sample prior to split removal.

d) Use a mechanical shaker (Strand model P) to remove splits from approximately 1 pint of each discard sample. A 10/64” slotted screen should be placed on the shaker with the slots perpendicular to the shaker motion. (The shaker is preset for 30 stroke cycles.)

e) Place the sample on the slotted screen and latch the cover in place. Start the screen shaker by pressing the black button on the front. When complete, remove the screen and record the weight of the product that passed “thru” the 10/64” slotted screen.

f) Repeat the process for each of the three remaining discard samples. (per group designation) g) When finished, the “flat” portion of the clean seed sample should also be screened using a

10/64” sieve. Any product remaining on top of the screen should be added to the “round” sample. The weight of the “thrus” should be recorded for split determination.

h) The results will be used to estimate flow rate and split removal efficiency. Station 3 Spiral Separator (Profile Industries single core rotary spiral) A rotary spiral will be tested to observe the effect of speed changes on the output results. Each group will run at a different rotational speed, combining results to save time. Timed samples will be weighed to determine flow rate and discard percentage. An imaging counter (Process Vision - OptiCount) will be used to determine seed count and oblong % for the output fractions. a) Verify that both outlet containers are in place at the base of the machine prior to operation. b) Set the variable speed control to obtain the desired core speed (RPM) listed for your group. c) The prepared sample can be poured into the top of the machine, taking care to maintain

sufficient material in the hopper to "flood feed" the circular orifice plate. Observe the product flow in the large spiral through the plastic windows. Record the approximate total operating time required to process the sample.

d) Record the weights for both output fractions ("round" and "oblong"). e) Manually collect a representative sample of both fractions for further analysis. Roughly 1/2

cup of seed will be required for the imaging counter. f) Use the imaging counter to determine the seed count and the number of “oblong” seeds

exceeding a pre-programmed axis ratio (set at “1.4”) for both samples. The "soybean" setting should be used to display yellow ovals around all seeds exceeding this programmed value. Record the percentage of oblong and split seed from the summary screen section.

g) Return test subsamples to outlet containers and label for comparison with other group results.

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Station 4 Bag Weight Estimates and Seed Count Variability Accurate seed count values are important for several conditioning operations, including seed treater calibration and bagging scale setpoint determination. Seed count can be determined by various methods, but the results tend to be somewhat variable due to sampling and counting variability. A vibratory bowl seed counter (IMD) will be used to estimate the seed count ratio required to estimate the bag weight required to meet a target package seed quantity. a) Select a prepared clean seed sample for counter operation. Fill the vibratory bowl on the seed

counter roughly ¾ full, adding seed during operation to maintain at least ½ fill depth. b) The counter should be pre-set to run a batch of 2500 seeds. Place sample containers below

both cyclone outlets and press the “run” button to start the counting process. c) Each group should run one batch, recording the actual seed quantity from the display and

weight for each 2500 seed batch. d) When finished, tilt the vibratory bowl to empty the feeder for the next group. e) A spreadsheet will be used to estimate the theoretical minimum bag weight required based on

the average seed count and sample variability from all four groups. Station 5: Bag Weight Variability (Express Scale model 5GV) The bagging scale will be used to demonstrate inherent bag weight variability and basic issues involved with meeting typical regulatory requirements. Multiple “bags” will be filled and checked as part of a simplified procedure for regulatory compliance verification. The scale setpoint should be 10.0 lbs for this lab exercise but a slightly higher target value would typically be needed to meet regulatory requirements. a) The inlet hopper should be filled prior to the lab, but additional seed may need to be added

during the bagging process to maintain a fairly consistent product level above the scale. b) Verify that the bag weight setpoint and bulk/dribble switch point values match the data sheet

entry for your group. The “in flight” offset level should be set at zero for initial calibration. c) Press the foot switch to deliver a pre-weighed seed batch to the outlet spout. Plastic containers

may be used in lieu of conventional bags for convenience during testing. Be sure to have a container in place to catch the sample prior to discharge. Collect the required 10 lb samples and record actual net package weights for a total of 5 bagging cycles.

d) Product should be manually returned to the scale feed hopper for use by the next group. e) The spreadsheet will be used to evaluate the mean bag weight and sample variability. This

information is used to determine the required in-flight adjustment to meet the desired target level, as well as an additional setpoint adjustment needed to meet regulatory requirements.

Note: Typical bag sizes for soybean seed are either 50 lbs or 120-140,000 seeds. We are reducing the nominal bag size due to scale batch size limitations. Likewise, the results from the seed counter would be used to estimate the correct bag weight if the seed company is labeling the bags by seed quantity. Each group of students should collect data for one set of five (5) bags using different switch points between the “bulk” and “dribble” cycles, then share information required to prepare the lab report.

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DISCUSSION QUESTIONS:

1) The small grain cleaning sequence used three different machines for cleaning wheat seed. What was the total discard percentage for the entire process as a percentage of the incoming product? What advantage does the addition of an indent cylinder and/or gravity separator provide compared to simply using an air-screen cleaner for wheat seed?

2) Cleaner screen perforation sizes were selected for food grade soybeans. (Be sure to list your

recommendations on the data sheet.) What was the projected total discard percentage for the screening operation? Why were slotted hole perforations used for the sifting (undersize removal) screening operation?

3) What percentage of the total soybean seed lot was discarded at the air-screen cleaner? How

does this compare to the predicted values from the screen selection process? Assuming the seed company has an internal requirement of 99.8% split removal efficiency, what changes might be made to help meet company requirements?

4) Rolling resistance is used by both the spiral and belt separator to remove oblong, shriveled,

and split soybeans. Spiral separators are commonly used in most seed conditioning facilities but belt separators are increasingly found in food grade plants. Explain the effect of rotational speed changes on the output results from the rotary spiral. Why might a seed company consider purchasing a belt separator in lieu of a conventional static or rotary spiral? List a few advantages & disadvantages of each machine type for typical soybean seed cleaning applications.

5) The bagging scale test data can be used to compare the variability of the bagging weights for

four “bulk/dribble” (prelim) switch points. Assuming the bags are labeled for 10.0 lbs (20% of typical values), compare the actual bag results to regulatory requirements for both "average" and "individual bag" (MAV) limits. Use the attached chart to determine the applicable MAV percentage. How many bags were in compliance for each of the four bulk/dribble settings, assuming use of weight-based labeling? Assuming some bags fail to pass, what might be done to help assure regulatory compliance on future bagging operations?

LAB REPORT: 1) Summarize the responses for the above discussion questions, including a brief explanation of

the reasons or methods used to arrive at each conclusion.

2) Attach a printed copy of the data spreadsheet, including the data collected during the lab and the calculated results.

Seed Science Center

Seed Conditioning Lab – Lower LevelDust FilterLMC Gravity

Scale

Stairs

Station 1

N

Station 2

Equipment Table

Equipment Table

Workbench

Cabi

net

Cabi

net

Cabi

net

Scale

Harada Belt Separator

Scale

Temporary Sample Storage Cabinet

BMC

Batc

hTr

eate

r

WestrupAir-Screen Cleaner

Tool Box

Wes

trup

Brus

hing

M

achi

ne

Fors

berg

D

esto

ner

Wes

trup

Belt

Sepa

rato

r

Rotary Spiral

Air-Oven Dryer

Bagging Scale

HeidGravity

Elec

tric

al P

anel

SortexColor Sorter

Forsberg 40V GravityOliver Voyager

Gravity

Crippen H-434 Air-Screen Cleaner

Seed Receiving Area

Catw

alk

Catwalk

Catw

alk

and

Stai

rs

Mitc

hell

Leg

Leg

4

Station 5

Shop Equipment

Pilot Plant – Lower Level Small Equipment Lab

Stein Shaker

Screen Shaker

Station B.c

Carter-Day Lab Indent

IMD Seed Counter

Divider

Imag

ing

Coun

ter

Station B.b

Scale

Hege Seed Treater

Cleaner Samples

Station 3

Station 4

Station B.a

El-C

on

Leg

Scale

Ball Seed Counter

Laptop

Seed Science Center

Mezzanine Level

Seed Conditioning Lab – Upper Level

ScaleStairs

N

Profile Spiral

Carter-Day 1VT Sizers

Carter-Day 1VT Sizers

Stai

rs

Mitc

hell

Leg

Leg

4

Pilot Plant – Upper Level

Crane BayDust Filter Dust Filter

Leg

1

Cabinet

Satake IE Color Sorter

Forsberg TKV-25 Gravity

Table

Gustafson GLCPS Treater

Satake DE Color Sorter

Carter-Day Fractionating

Aspirator

Storage Shelving

Cart

er-D

ay

#3

Uni

iflow

Location Sequence:1) Screen selection (outer room)2) Cleaner analysis (outer room)3) Rotary spiral (outer room)4) Seed counter (lower level)5) Bagging Scale (lower level)

Oliv

er 2

12 S

izer

1

Seed Science Center

Pending Lab Equipment Operations• Cleaner Screen Selection – “bin run” soybeans

• Cleaner Sample Analysis – split removal efficiency

• Rotary Spiral Speed Test – discard, split, oblong %

• Bag Weight Estimate & Seed Count Variability

• Bag Weight Variability - vary bulk/dribble setting

Seed Science Center

1 – Cleaner Screen Selection

• Select one of four “bin run” samples

• Divide into two subsamples (round/slot)

• Sieve - sequential screen stacks (3-5 min)

• Weigh and document product in each screen fraction (note any low quality mat’l)

Paired Groups – share round/flat data

Seed Science Center

2 – Cleaner Sample Analysis

• Select 1 of 4 discard samples

• Note sample weight & time

• Sieve sample using 10/64” slot

• Record “over” and “thru” weights

2

Seed Science Center

3 - Rotary Spiral Separator• Run one sample at listed RPM• Record run time & sample weights• Obtain: Seed Count, Oblong, &

Split concentration (OptiCount)• Calculate: % Discard by Fraction,

Split & Oblong Removal Efficiency• Share data to compare speeds

Rotary Spiral Separator

Seed Science Center

4 – Bag Weight & Counter Variability

Samples prepared & data provided

4

Seed Science Center

Station 5: Net Weigh Bagging Scale

• Review basic components and operation• Adjust to approximate “dribble” time listed• Collect and weigh a total of five (5) “packages”• Given: Additional values from remaining groups• Calculate: MAV and minimum package weights• Check: Which levels met NIST requirements?

Express Scale 5GV

Vibrator

Prelim

Iowa State University155 Seed Science Center

Agronomy/Horticulture 338Conditioning Lab Data (#2)

August 31st, 2017Group Number _____________

Station #B-a: Westrup Lab Cleaner

Sample Weight UOM

Sample Weight (lb)

Machine Fraction (%)

Total Fraction (%)

Pint Cup Weight (g)

Test Weight (lb/bu) Comments

Scalpings g 0.00 #DIV/0! #DIV/0!Scalpings g 0.00 #DIV/0! #DIV/0!Siftings g 0.00 #DIV/0! #DIV/0!Air Liftings g 0.00 #DIV/0! #DIV/0!Clean Seed g 0.00 #DIV/0! #DIV/0! 0.0Total Cleaner Input 0.00 #DIV/0! #DIV/0!

Station #B-b Carter-Day Lab Indent

Sample Weight UOM

Sample Weight (lb)


Total Fraction (%)

Pint Cup Weight (g)


Short material g 0.00 #DIV/0! #DIV/0!Clean seed fraction g 0.00 #DIV/0! #DIV/0!Long material g 0.00 #DIV/0! #DIV/0!Total Indent Input 0.00 #DIV/0! #DIV/0!

Station #B-c: Lab Gravity Separator

Sample Weight UOM

Sample Weight (lb)


Total Fraction (%)

Pint Cup Weight (g)


Heavy (Good) g 0.00 #DIV/0! #DIV/0! 0.0Medium (Good / Recycle) g 0.00 #DIV/0! #DIV/0! 0.0Light (Discard) g 0.00 #DIV/0! #DIV/0! 0.0Total Gravity Input 0.00 #DIV/0! #DIV/0!

Station #1: Soybean Screen Selection (initial group pair, groups 1&2) Sample No. "A"Round Hole Screens Food Grade Soybeans Slotted Hole Screens Food Grade Soybeans

Group #1 Weight (g) Pct (%) Comments Group #2 Weight (g) Pct (%) Comments

Over 22R Over 15SOver 21R Over 14SOver 20R Over 13SOver 19R Over 12SOver 18R Over 11SOver 17R Over 10SOver 16R Over 9SOver 15R Over 8SThru 15R Thru 8S

Total Weight 0.00 0.0% Total Weight 0.00 0.0%Recommended Scalping Screen Size: Recommended Sifting Screen Size:

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Station #1: Soybean Screen Selection (second group pair, groups 3&4) Sample No. "B"

Round Hole Screens Food Grade Soybeans Slotted Hole Screens Food Grade Soybeans

Group #3 Weight (g) Pct (%) Comments Group #4 Weight (g) Pct (%) Comments

Over 22R Over 15S

Over 21R Over 14S

Over 20R Over 13S

Over 19R Over 12S

Over 18R Over 11S

Over 17R Over 10S

Over 16R Over 9S

Over 15R Over 8S

Thru 15R Thru 8S

Total Weight 0.00 0.0% Total Weight 0.00 0.0%Recommended Scalping Screen Size: Recommended Sifting Screen Size:

Station #2: Air Screen Cleaner Sample Analysis

Sample Weight

Sample UOM

Sample Time (sec)

Flow Rate (lb/hr)


Over 10/64" Slot (g)

Thru 10/64" Slot (g)

Split Level (%)

Split Flow (lb/hr)

Split Rem. Eff. (%)

Upper Air (Group #2) lb #VALUE! #DIV/0!

Scalpings (oversize - Group #2) lb #VALUE! #DIV/0!

Siftings (screen #2-10S-Group #3) lb #VALUE! #DIV/0! #DIV/0! #DIV/0!



Lower Air Liftings (Group #1) lb #VALUE! #DIV/0! #DIV/0! #DIV/0!Clean Seed Output (Group #1) lb #VALUE! #DIV/0! #DIV/0!

Total Cleaner Input 0.0 #VALUE! #VALUE! #DIV/0! #DIV/0!

Note: Adjusted time units (was recorded in minutes but entered as seconds), also added remaining weight of clean seed sample as "over 10/64" fraction

Station #3: Rotary Spiral (Group #1)

Rotary Speed (rpm)

Sample Weight Sample UOM

Sample Time (sec)

Flow Rate (lb/hr)


Subsample Weight (g)

Subsample Seed Qty

Good Spiral Output (round) -20 lb #VALUE!Discard (flat) -20 g 0.00 #VALUE!Total Spiral Input 0.0 #VALUE!

Removal Efficiency Data Rotary Speed (rpm) Seed Count Oblong (%)

Oblong Rate (lb/hr)

Percent Splits (%)

Split Rate (lb/hr)

Good Seed (%)

Good Rate (lb/hr)

Good Spiral Output (round) -20 #DIV/0! #VALUE! #VALUE! 100.00% #VALUE!Discard (flat) -20 #DIV/0! #VALUE! #VALUE! 100.00% #VALUE!Total Spiral Input #DIV/0! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE!

Removal Efficiency: #VALUE! #VALUE! Yield: #VALUE!

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Rotary Speed (rpm)


Sample Time (sec)

Flow Rate (lb/hr)



Subsample Seed Qty

Good Spiral Output (round) 0 lb #VALUE!Discard (flat) 0 g 0.00 #VALUE!Total Spiral Input 0.0 #VALUE!


Oblong Rate (lb/hr)

Percent Splits (%)

Split Rate (lb/hr)

Pct Good (lb/hr)

Good Rate (lb/hr)

Good Spiral Output (round) 0 #DIV/0! #VALUE! #VALUE! 100.00% #VALUE!Discard (flat) 0 #DIV/0! #VALUE! #VALUE! 100.00% #VALUE!Total Spiral Input #DIV/0! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE!



Rotary Speed (rpm)


Sample Time (sec)

Flow Rate (lb/hr)



Subsample Seed Qty



Oblong Rate (lb/hr)

Percent Splits (%)

Split Rate (lb/hr)

Pct Good (lb/hr)

Good Rate (lb/hr)

Good Spiral Output (round) 20 #DIV/0! #VALUE! #VALUE! 100.00% #VALUE!Discard (flat) 20 #DIV/0! #VALUE! #VALUE! 100.00% #VALUE!Total Spiral Input #DIV/0! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE!



Rotary Speed (rpm)


Sample Time (sec)

Flow Rate (lb/hr)



Subsample Seed Qty



Oblong Rate (lb/hr)

Percent Splits (%)

Split Rate (lb/hr)

Pct Good (lb/hr)

Good Rate (lb/hr)

Good Spiral Output (round) 40 #DIV/0! #VALUE! #VALUE! 100.00% #VALUE!Discard (flat) 40 #DIV/0! #VALUE! #VALUE! 100.00% #VALUE!

Total Spiral Input #DIV/0! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE!


Note: "Yield" calculation assumes all product that is not "split" or "oblong" represents "good seed".

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IMD Seed Counter - 2500 seed batches Theoretical Conversion

Sample Quantity

Sample Wt. (g)

Seed Count (qty / lb)

TGW (g/1K seeds)

Qty for 10 lb Bag

Weight for 120K (lbs)

Weight for 140K (lbs)

1 2500 0.00 0.00 0 #DIV/0! #DIV/0!2 2500 0.00 0.00 0 #DIV/0! #DIV/0!3 2500 0.00 0.00 0 #DIV/0! #DIV/0!4 2500 0.00 0.00 0 #DIV/0! #DIV/0!

Average (mean value) 2500 0.00 0.00 0.00 0 #DIV/0! #DIV/0!Range 0.00 0.00 0.00 0.0 #DIV/0! #DIV/0!Standard Deviation 0.00 0.00 0.00 0.0 #DIV/0! #DIV/0!

NOTE: Theoretical package weight setpoint will typically be increased slightly to compensate for sampling error and variability of seed count and bag weights.

Package Label Type Label Value Label UOM MAV (lb) MAV (%) Minimum (lb)

Weight 10.00 lb 0.22 2.2% 9.78

Station #5: Bagging Scale Switch Point (PRELIM)

Cycle Time (sec)

Bag #1 Weight (lbs)

Bag #2 Weight (lbs)

Bag #3 Weight (lbs)

Bag #4 Weight (lbs)

Bag #5 Weight (lbs)

Mean (lbs)Std Dev

(lbs)Qty Less

Than MAV

Avg Less than

Label?

Group #1 Results 0.00 0.00 0.000 5 Yes

Group #2 Results 0.25 0.00 0.000 5 Yes

Group #3 Results 0.75 0.00 0.000 5 YesGroup #4 Results 1.50 0.00 0.000 5 Yes

Adjusted Results for Station #5 (free flight adjustment)

Switch Point (PRELIM)

In Flight Offset (lbs)

Bag #1 Adj Weight (lbs)





Mean (lbs)Std Dev

(lbs)Qty Less

Than MAV

Avg Less than

Label?

Group #1 Results 0.00 -10.00 10.00 10.00 10.00 10.00 10.00 10.00 0.000 - No

Group #2 Results 0.25 -10.00 10.00 10.00 10.00 10.00 10.00 10.00 0.000 - No

Group #3 Results 0.75 -10.00 10.00 10.00 10.00 10.00 10.00 10.00 0.000 - NoGroup #4 Results 1.50 -10.00 10.00 10.00 10.00 10.00 10.00 10.00 0.000 - No

Note: "In Flight Adjustment" shown is the offset value needed to provide an average matching the setpoint.

Adjusted Results for Station #5 (setpoint shift to meet MAV)

Switch Point (PRELIM)

Addt'l MAV Offset (lbs)






Mean (lbs)Std Dev

(lbs)Qty Less

Than MAV

Avg Less than

Label?

Group #1 Results 0.00 0.00 10.00 10.00 10.00 10.00 10.00 10.00 0.000 - No

Group #2 Results 0.25 0.00 10.00 10.00 10.00 10.00 10.00 10.00 0.000 - No

Group #3 Results 0.75 0.00 10.00 10.00 10.00 10.00 10.00 10.00 0.000 - NoGroup #4 Results 1.50 0.00 10.00 10.00 10.00 10.00 10.00 10.00 0.000 - No

Note: The "Addt'l MAV offset" listed is the setpoint increase needed to keep all tested bags above the MAV requirement.

2016 Food Grade Soybean Seed

Station #4: Seed Count Determination

Replication (Group) Number

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