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Sieves can be calibrated precisely and economically using Endecotts Glass Microspheres. This method has the advantage of quick calibration without any special equipment and can be done by anyone familiar with sieving procedures.
This process allows for analysis of over 80% of the sieve surface. The glass sample beads are certified using electroformed sieves NIST & NPL traceable and are accurate to .01 mm for the smaller aperture sieves.
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The calibration samples are microspheres formed from glass that range from 3.35 mm down to 20 µm sizes. The single shot bottles remove operator sampling errors. Each sample batch is supplied with a Calibration Certificate. METHOD INSTRUCTIONS
SODA LIME GLASS SIEVE CALIBRATION SPHERES 620 60026
HANDY STORAGE CASE
Calibration Sample Procedure:
Select the calibration sample size that matches the sieve aperture size.
- Place the 'Single Shot' sample on the sieve under test and shake for 2 minutes.
- Weigh the sample again and calculate the percentage passing through the sieve.
- Includes 5 test shots per selection
EACH SET CONTAINS 5 BOTTLES SAMPLE NIST CERTIFICATE
Simply read off the percentage passing along a graph like this supplied with every sample.
Recommended number of bottles per sieve
SIEVE DIAMETER
200mm or 8 inches 1 bottle 300mm or 12 inches 2 bottles 450mm or 18 inches 5 bottles
SIEVE CAL NEW AUTOMATIC SIEVE CALIBRATOR
NEW! ON SITE AND REMOTE SIEVE CALIBRATION SERVICE
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