Testomat 808 Indicator 303 – Precise Residual Hardness Measurement
Original indicator solution for determining residual hardness
The Testomat 808 Indicator 303, 500 ml bottle from Heyl, is an original indicator solution for measuring residual hardness through color change with the Testomat 808 and Testomat F-BOB. It provides clear results at a threshold of 0.1 °dH.
Indicator 303 is designed for residual hardness monitoring. With minimal maintenance, it enables safe process control.
Highly Precise Residual Hardness Monitoring
The Testomat 808 Indicator 303 from Heyl is a specially developed original indicator solution for precise measurement of residual hardness in water samples through a clearly defined color change. It is optimally calibrated for use with the Testomat 808 and Testomat F-BOB and delivers reliable measurement results at a threshold of 0.1 °dH.
Thanks to its exact adaptation to the measurement methodology of the devices, it ensures high measurement accuracy and reproducibility. Deviations can be detected early, effectively preventing limescale formation.
Manufacturer Warranty and Original Indicators
The manufacturer’s warranty for Testomat® devices can only be guaranteed when using Heyl original indicators.
Frequently Asked Questions
The shelf life of an indicator is printed on the product label for each batch. In accordance with our terms and conditions, we deliver with a guaranteed minimum shelf life of 7 months.
When it comes to indicator consumption, a distinction must first be made between TH indicators (e.g. TH 2005, 2025, 2050, etc.), which are used for the Testomat ECO, Testomat EVO TH, Testomat 2000 and Testomat Limit LT analysis devices, and the indicators for the Testomat 808 (300 series indicators, e.g. indicators 301, 305, etc.).
The indicator consumption per analysis for the TH indicators is directly related to the limit value to be monitored. The higher this is, the higher the indicator consumption. For the Testomat 808 indicators (300 series), consumption is approximately 80 µl per analysis.
By entering the operating data (analysis interval, limit value, etc.), the exact consumption or indicator requirement per year can be determined using our indicator consumption calculator:
Indicators - Consumption calculator - Heyl Neomeris
The indicator is available in both 500 ml and 100 ml bottles. The analyser is delivered with the 500 ml bottle set up and the scope of delivery includes the screw cap with hole and insert for the screw cap of the 500 ml indicator bottle. To use 100 ml bottles, the bottle size must be changed to 100 ml in the basic programming and the screw cap with hole and insert for the indicator must also be purchased (item no. 40143).
You can find the safety data sheets in the online shop (www.heylneomeris.shop) under the menu item – Service / Help – Downloads Safety Data Sheets.
Disposal instructions can be found in section 13 of the safety data sheet. Disposal must be carried out in accordance with official regulations.
The indicator can no longer be used after the expiry date. Once the indicator has expired, accurate measurement results can no longer be guaranteed.
Section 7 of the safety data sheet contains all relevant information on storing the indicator. The recommended storage temperature should be between 15 and 25°C.
Measurement errors when using external indicators! The use of third-party indicators can lead to significant measurement deviations or errors. Damage caused by foreign particles in the area of the dosing pump, measuring chamber or valves is also possible. The use of third-party indicators will void the warranty! Only use original Heyl indicators, which are specially designed to meet the requirements of the measuring devices and thus guarantee accurate measurement results.