Description
Designed as a more accurate alternative to chemical test kits, the HI-774 provides quick, accurate results in a few easy steps (see below).
Features:
Tips for an accurate measurement
It is important that the sample does not contain any debris.
Whenever the cuvette is placed into the measurement cell, it must be dry outside, and completely free of fingerprints, oil and dirt. Wipe it thoroughly with HI-731318 or a lint–free cloth prior to insertion.
Shaking the cuvette can generate bubbles, causing higher readings. To obtain accurate measurements, remove bubbles by swirling or be gently tapping the cuvette.
Do not let the reacted sample stand for too long after reagent is added as accuracy will be affected.
After the reading, it is important to immediately discard the sample otherwise the glass might become permanently stained.
Supplied with
- 2 sample cuvettes
- Cuvette cap
- Starter pack of reagents x 6 tests (re-ordering information: HI-774-25 x 25 tests)
- 1 x 1.5 AAA battery
- Instructions
Specifications
Range 0 to 999 ppb Resolution 1 ppb Accuracy ±15 ±5% of reading @ 25ºC Light Source LED @ 525 nm Light Detector Silicon photocell Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing Battery Type (1) 1.5V AAA Auto-off After 3 minutes of non-use and 2 mins after reading Dimensions 86 x 61 x 37.5 mm Weight 64 g Method Adaptation of Standard Ascorbic Acid Method. The reaction between the phosphate and the reagent causes a blue tint in the sample.