Introduction
This user manual provides essential information for the proper operation of the Milwaukee MI411 PRO Photometer. This instrument is designed for accurate measurement of Free & Total Chlorine and pH levels in water samples.
The manual covers instrument specifications, detailed measurement procedures for both chlorine and pH, guidance on interpreting display codes and error messages, accessory information, and warranty details.
Key Features & Specifications
The MI411 PRO offers precise measurements with user-friendly operation. Key specifications include:
- Chlorine Range: 0.00 to 5.00 mg/L Cl₂
- pH Range: 6.5 to 8.0 pH
- Accuracy: ±0.06 mg/L for Chlorine, ±0.1 pH for pH
- Light Source: Tungsten lamp
- Power: 9V battery
- Dimensions: 192 x 104 x 52 mm
Measurement Procedures
Step-by-step instructions are provided for measuring:
- Free Chlorine
- Total Chlorine
- pH
The manual also details how to change parameters and interpret the instrument's display codes and potential error messages.
Support & Warranty
Milwaukee Instruments conform to CE European Directives. The instrument comes with a 2-year warranty against defects in materials and manufacturing.
For detailed information on product and battery disposal, please refer to local waste disposal services or visit the official Milwaukee Instruments websites:
Proper product and battery disposal helps prevent negative consequences for human health and the environment.




