Showing 481–482 of 482 resultsSorted by popularity
Ammonia Low-Range Checker® HC - HI700
The Hanna Ammonia Low-Range Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine absorbance and ion concentration. Professional instrumentation offers greater resolution and accuracy but can cost hundreds of dollars. The Hanna Ammonia Low-Range Checker® uses a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the affordable price of a chemical test kit.
- Compact, Portable Design
- Built-in Timer
- One-Button Operation
HI70007C pH 7.01 Calibration Buffer (25 x 20 mL) Sachets
HI70007C is a premium quality pH 7.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna’s line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI70007C is for 25 sachets containing 20 mL of buffer.
- Supplied with Certificate of Analysis
- Accuracy of ±0.01 pH @ 25℃
- Temperature chart of the actual pH value at various temperatures printed on each bottle
