🧪 Calibrate with confidence—because your water quality deserves precision.
The Hach SpecCheck Secondary Gel Standards Set offers four sealed 10 mL gel cells with blank and three chlorine standards (0-2.0 mg/L Cl₂) designed for quick, accurate instrument calibration. These computer-formulated gels provide stable, non-hazardous, ready-to-use standards with a two-year shelf life, eliminating the need for reagent prep and ensuring consistent water quality testing in professional lab environments.
| ASIN | B00N4028YE |
| Best Sellers Rank | #135,966 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #185 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
1 month ago
5 days ago
