Iron LR Checker

•  0 to 999 ppb
•  Ideal for freshwater aquariums only
•  Iron

The HI-746 Iron low range Checker is a simple, accurate and cost effective way to measure low ranges of iron in water.

Designed as a more accurate alternative to chemical test kits, the HI-746 provides quick, accurate results in four easy steps.

HI-746 uses an adaptation of the TPTZ method.

Ideal for:

• Fresh water aquariums only
• Water quality
• Education
• Industrial
• Municipal water

Key features:

• Small palm-sized design
• Accurate from ± 20 ppb ±5% of reading
• Dedicated to a single parameter
• Auto power off after 10 minutes of inactivity
• Built-in timer for timed reaction readings

Order Information

The HI-746 Iron low range Checker is supplied with sample cuvettes with caps (2), Iron low range reagent starter kit x 25 (re-ordering information HI-746-25 x 25 tests), glass cylinders with rubber cap (2), battery, instructions and quick start guide.

Also available: HI-746-11 Calibration set

Also available: HI-721 Iron High Range (ppm)

Four steps. One click. Instant Readout.

  1. ‘Zero’ the Checker®HC with your vial & water sample inside

  2. Take the vial out and add your reagent

  3. Place your vial into your Checker®HC

  4. Press the button and read the results

Use HI-746-25 Reagents for HI-746 Iron LR handheld Colorimeter - Checker®HC x 25 tests.

Use HI-746-11 Calibration Check Set for HI-746 Iron LR handheld Colorimeter - Checker®HC.

HI746-11 Details:

The Iron Low Range Checker® HC Calibration Check Set – HI-746-11 provides a simple solution to validating the Iron Low Range Checker® HC – HI-746 that has a range of 0 to 999 ppb.

HI-746-11 is a high-quality set of calibration standards that allows users to validate the Iron Low Range Checker®HC – HI-746. The HI-746-11 includes one sealed cuvette for zero ppb iron and one cuvette that is tinted to an equivalent 400 ppb iron sample @ 25®C. The calibration check set is produced using reagent grade chemicals in a temperature controlled environment.

HI746-25 Details:

The HI-746-25 are the replacement reagents for the HI-746 Iron Low Range Checker® HC. 

These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiry date on each packet for traceability.

The HI-746-25 are high quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Iron Low Range Checker® HC. These reagents follow the TPTZ Method in which the reaction between iron and reagents causes a violet tint in the sample. By simply adding the packets of HI-746-25 reagents to the sample, the reaction will take place and the HI-746 will determine the concentration from the colour that is produced. The results will be displayed in ppb of iron. These reagents are designed to be used with samples that have an expected range of 0 to 999 ppb iron.

Tip 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 or 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 such bubbles by swirling or by gently tapping the cuvette.

Do not let the reacted sample stand for too long after reagent is added, or accuracy will be lost.

After the reading, it is important to discard the sample immediately, otherwise the glass might become permanently stained.