Milwaukee MI406 PRO Free Chlorine Photometer

Brand: Milwaukee

SKU: 101689

The Milwaukee MI406 PRO Free Chlorine Photometer is an essential tool for anyone needing accurate and efficient free chlorine measurements. Its user-friendly features, robust design, and versatility make it an ideal choice for professionals across multiple industries who prioritize water quality and safety.

Range: 0.00 to 5.00 mg/L (Cl2 Free)
Resolution: 0.01 mg/L (0.00 to 3.50 mg/L) | 0.1 mg/L (above 3.50 mg/L)
Accuracy: +/- 0.06 mg/L @ 1.50 mg/L

Datasheet PDF

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Description

Overview

The Milwaukee MI406 PRO is a portable photometer for measuring free chlorine in water. Covering 0.00 to 5.00 mg/L of free Cl2, it gives clear digital readings that remove the guesswork of visual test kits, making chlorine testing fast and consistent in the field or laboratory.

A tungsten lamp with a 525 nm narrow-band interference filter and a silicon photocell detector deliver stable photometric results, following an adaptation of USEPA method 330.5 and Standard Method 4500-Cl G. Portable and powered by a single 9 V battery, the MI406 comes with glass cuvettes for immediate testing.

Key Features

Free chlorine measurement from 0.00 to 5.00 mg/L (Cl2)
Fine 0.01 mg/L resolution below 3.50 mg/L (0.10 mg/L above)
Accuracy of ±0.06 mg/L at 1.50 mg/L
Tungsten lamp with a 525 nm narrow-band interference filter
Based on USEPA method 330.5 and Standard Method 4500-Cl G (DPD)
Clear digital readout eliminates subjective colour matching
Portable design powered by a single 9 V battery
Automatic shut-off after 10 minutes of non-use
Supplied with two glass cuvettes

Applications

The Milwaukee MI406 PRO is used to measure free chlorine in drinking water, swimming pools and spas, cooling water and industrial disinfection, where chlorine control is essential for safe, effective treatment.

What’s in the Box

1 × Milwaukee MI406 PRO free chlorine photometer
2 × Glass cuvettes (MI0001)
Reagent starter sachets
1 × 9 V battery
1 × Instruction manual

Why buy from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) is a trusted supplier of Milwaukee test and measurement instruments in the UAE. We offer genuine products, competitive pricing, fast local delivery across Dubai, Abu Dhabi and the wider UAE, and knowledgeable after-sales support. Download the Milwaukee MI406 datasheet or contact our team for a quotation.

Specifications

Specification	Details
Range	0.00 to 5.00 mg/L of free Cl2
Resolution	0.01 mg/L (0.00–3.50 mg/L); 0.10 mg/L (above 3.50 mg/L)
Accuracy	±0.06 mg/L at 1.50 mg/L
Method	Adaptation of USEPA method 330.5 and Standard Method 4500-Cl G
Light source	Tungsten lamp
Light detector	Silicon photocell with 525 nm narrow-band interference filter
Auto shut-off	After 10 minutes of non-use
Cuvettes	MI0001 (2 included)
Operating environment	0 to 50 °C (32 to 122 °F), max 100% RH
Battery	1 × 9 V (included)
Dimensions	192 × 104 × 52 mm (7.5 × 4.1 × 2.0 in.)
Weight	0.38 kg (0.84 lb)

Description Specifications Related Documents

Milwaukee MI406 PRO Free Chlorine Photometer attributes

Free Chlorine Photometer, Range: 0.00 to 5.00 mg/L of (Cl2 Free) Resolution: 0.01 mg/L (0.00 to 3.50 mg/L) Resolution: 0.10 mg/L (above 3.50 mg/L) Accuracy ± 0.06 mg/L @ 1.50 mg/L

Chlorine Photometer Range, Resolution, Accuracy

adaptation of USEPA method 330.5 & Standard Method 4500-Cl G

Method

Tungsten Lamp

Light Source

Silicon photocell and 525 nm narrow band interference filter

Light Detector

0 to 50 C 32 to 122 F / Max. RH 100%

Operating Environment