Calibration Columns
Koflo pump calibration columns (also known as calibration cylinders) provide a simple method for determining pump flowrate using industry-standard graduations of milliliters/minute and gallons/hour. All columns feature top-aligned graduated scales that allow the operator to survey both ml/min and GPH in a single, one-minute test. High-contrast blue lettering enhances readability in all light conditions,and all scales have a protective lamination layer to protect against chemical attack.
Calibration columns are available in borosilicate glass or PVC construction:
- Glass calibration columns are ideal for measuring corrosive chemical flow and are available with CPVC, PTFE, and 316L stainles steel end caps.
- For non-corrosive or mild chemicals, PVC calibration columns are an economical choice.
All column sizes are available and in-stock:
Request PricingAll-New Glass Columns
Designed from the ground up, our newest line of pump calibration columns feature a borosilicate glass interior for extreme chemical resistance and an even higher level of readability when compared to PVC columns. The new design offers an integrated polycarbonate shield for full double-containment of corrosive chemicals with the added benefit of industry-leading impact resistance.
End caps are offered in multiple materials for compatibility with a wide array of fluids or chemicals, including:
- CPVC
- PTFE
- 316L Stainless Steel
Accurate, dual-scale metered graduations
Each Koflo® calibration column comes with two precise graduated scales behind a protective layer of lamination to protect against chemical erosion. These dual-scale metered graduations provide accurate measurements in your preferred flow units.
See Technical Specifications for more information on available scales.
How do Calibration Columns work?
Watch our animation to see a calibration cylinder in operation:
Technical Specifications - PVC
| 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 |
Technical Specifications - Glass
| Capacity | Model Number (by Material) | Tube O.D. | Column Height | FNPT End Connections |
Weight (lbs) | |||
|---|---|---|---|---|---|---|---|---|
| mL/min | GPH | CPVC | PTFE | 316L Stainless | CPVC / PTFE / Stainless | |||
| 100 | 1.5 | 100ML-GL-CPVC | 100ML-GL-PTFE | 100ML-GL-316L | 1.75" | 13" | 1/2" | 1 / 1.1 /1.6 |
| 250 | 4 | 250ML-GL-CPVC | 250ML-GL-PTFE | 250ML-GL-316L | 2.25" | 16.5" | 1/2" | 1.8 / 2.0 / 3.1 |
| 500 | 8 | 500ML-GL-CPVC | 500ML-GL-PTFE | 500ML-GL-316L | 2.75" | 18" | 3/4" | 2.7 / 3.0 / 4.8 |
| 1,000 | 16 | 1000ML-GL-CPVC | 1000ML-GL-PTFE | 1000ML-GL-316L | 2.75" | 29" | 3/4" | 4.0 / 4.4 / 6.2 |
| 2,000 | 32 | 2000ML-GL-CPVC | 2000ML-GL-PTFE | 2000ML-GL-316L | 4.0" | 24" | 1" | 5.8 / 6.7 / 11.5 |
| 4,000 | 64 | 4000ML-GL-CPVC | 4000ML-GL-PTFE | 4000ML-GL-316L | 4.0" | 39" | 1" | 8.8 / 9.6 / 14.5 |
