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🧪 Calibrate with Confidence — Because Accurate Water Quality Can't Wait
The Hach SpecCheck Secondary Gel Standards Set offers a professional-grade, ready-to-use calibration solution for chlorine testing within 0-2.0 mg/L Cl₂. Featuring four sealed gel-filled glass cells, a certificate of analysis, and a durable plastic case, this kit ensures fast, stable, and accurate instrument validation with a 2-year shelf life—ideal for labs demanding consistent water quality measurements without the hassle of reagent preparation.
| ASIN | B00N4028YE |
| Best Sellers Rank | #88,364 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #117 in Analytical Reagents |
| Date First Available | August 28, 2014 |
| Item Weight | 4.9 ounces |
| Item model number | 2635300 |
| Manufacturer | HACH COMPANY |
| National Stock Number | 6550-01-504-0944 |
| Product Dimensions | 3 x 3 x 3 inches |
W**E
I would buy again
Product was as described and was only a month old so the expiration dates were far enough out that I would have a long life use for the item.
J**H
Expensive
They expire less than a year from date of receipt
R**.
SpecChek works!
This product is used to perform monthly accuracy checks required by the state of Texas for Hatch Chlorine Testers. The product arrived on time and was well packaged.
Trustpilot
5 days ago
2 weeks ago