Abrasives Test Kit
Addendum to Instruction Manual v.1
600 ml plastic
beaker
60 ml Certified
Conductivity
Standard
Plastic funnel
Stainless steel mixing rod
1 liter deionized water (type II)
600 ml glass beaker
100 ml
glass
beaker
100 circle filters (125 mm)
The Abrasives Test Kit for the PosiTector SSTwas
designed to determine the concentration of soluble
salts in blast cleaning abrasives, in accordance
with ASTM D4940 and ISO 11127-6.
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Steps to Perform a Test in accordance with ASTM D4940
Test Preparation
a) Verify the PosiTector SST test cell using the Certified
Conductivity Standard (refer to the Quick Guide).
b) Thoroughly rinse beakers, funnels, and stirring rod with
deionized (DI) water until the rinse water has a
conductivity of 5.0 µs/cm (5.0 µmho/cm) or less.
1 - Prepare the Abrasive Solution
a) Add 300 ml of deionized water to
glass beaker
b) Using the plastic beaker, measure 300 ml of abrasive.
Add to the 600 ml glass beaker.
c) Stir the abrasive-water solution for 1 minute, let stand
8 minutes, then stir for another minute.
2 - Filter the Abrasive Solution
a) Prepare the filter paper by folding in half, and then in
half again. Place your finger between the third and
fourth layers to open into a funnel shape.
.
the 600 ml
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b) Insert the filter into the plastic funnel and filter 10 ml of
liquid into a separate container and discard.
c) Using the wetted filter and funnel, continue filtering
liquid into the small glass beaker to the 80 ml line.
3 - Prepare the Test Cell
Rinse the PosiTector SST test cell with deionized (DI)
water until the rinse water has a conductivity reading of
5.0 µs/cm (5.0 µmho/cm) or less.
NOTE:
Ensure the Po
of
Bresle Mode prior to testing.
siTector SST has been taken out
4 - Test the Filtered Solution
a) Rinse the PosiTector SST probe cell by submerging it
into the filtered liquid 2 to 3 times.
b) Lower the PosiTector SST probe cell into the filtered
liquid and record the results in accordance with ASTM
D4940. A calculation is not required as the test cell
constant (K25) is equal to 1.
NOTE:
An update may be needed fo
r the PosiT
ector SST
to display measurements above 500 µs/cm.
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Limited Warranty, Sole Remedy
Limited Warranty, Sole Remedy
and Limited Liability
and Limited Liability
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the express limited warranty, remedy, and limited
liability that are set forth on its website:
This manual is copyrighted with all rights reserved and may not be
reproduced or transmitted, in whole or part, by any means, without
written permission from DeFelsko Corporation.
DeFelsko, PosiTector and PosiSoft are trademarks of DeFelsko
Corporation registered in the U.S. and in other countries. Other
brand or product names are trademarks or registered trademarks
of their respective holders.
Every effort has been made to ensure that the information in this
manual is accurate. DeFelsko is not responsible for printing or
clerical errors.
© DeFelsko Corporation USA 2018 All Rights Reserved
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