Calibration Columns & Cylinders

Koflo pump calibration columns / calibration cylinders provide a simple method for determining pump flowrate using industry-standard graduations of milliliters/minute and gallons/hour. Top-aligned graduated scales allow the operator to survey both ml/min. and GPH in a single test. High-contrast blue lettering enhances readability in all light conditions, and all scales have a protective Mylar lamination to protect against chemical attack. All sizes feature rugged construction using industrial grade machined PVC fittings.

Koflo fixed-cap pump calibration columns

All column sizes are available and in-stock:

Request Pricing

Accurate, dual-scale metered graduations

Each Koflo® calibration column comes with two precise graduated scales behind a protective layer of Mylar lamination to protect against chemical erosion. These dual-scale metered graduations provide more accurate measurements for the calibration columns.

See Technical Specifications for more information on available scales.

How do Calibration Columns work?

Watch our animation to see a calibration cylinder in operation:

Close up of 1000ML calibration column scales

Technical Specifications

Capacity Model Number Tube O.D. Column Height FNPT End
Connections
Weight
mL/min GPH Fixed Cap Top Slip Cap
100 1.5 100 ML 100 ML-SC 1.315" 12-1/2" 1/2" 7 oz
250 4 250 ML 250 ML-SC 1.660" 16-1/4" 1/2" 12 oz
500 8 500 ML 500 ML-SC 2.375" 16" 3/4" 1.4 lb
1,000 16 1000 ML 1000 ML-SC 2.375" 25" 3/4" 1.9 lb
2,000 32 2000 ML 2000 ML-SC 3.500" 24" 1" 4 lb
4,000 64 4000 ML 4000 ML-SC 4.000" 34" 1" 6.5 lb
10,000 160 10000 ML 10000 ML-SC 6.625" 27" 2" 7.5 lb
20,000 320 20000 ML 20000 ML-SC 6.625" 46" 2" 10 lb