Updated on January 17, 2024


Created on October 2, 2019

Extech FL700 Fluoride Meter

The Extech FL700 Fluorimeter is a portable fluoride meter for drinking water and other aqueous samples.

Tested By
  • European committee for CE marking
  • European Committee for Electrotechnical Standardization (CENELEC)
  • U.S. Environmental Protection Agency
Content Partners


Product Description

The Extech FL700 Fluoride meter is an electrode sensor that directly reads total fluoride ions in water samples from 9.99 ppm or mg/L down to 0.1ppm automatic temperature compensation (±10 degrees C of calibration temperature) in less than one minute. This product is part of the Extech Instruments brand which designs handheld meters and testers for field and laboratory testing. The brand is currently owned and distributed by FLIR Commercial Systems Inc.

Target SDGs

SDG 6: Clean Water and Sanitation

SDG 3: Good Health and Well-Being

Market Suggested Retail Price


Target Users (Target Impact Group)

Household, Small and Medium-sized Enterprises

Distributors / Implementing Organizations

Extech has US distributers and international distributers.

Manufacturing/Building Method

The Extech FL700 fluoride meter is designed and manufactured by the Extech Instruments brand of FLIR Commercial Systems Inc. based in Nashua, New Hampshire, USA.

Intellectural Property Type


User Provision Model

User can purchase the FL700 fluorimeter through US or international Extech distributers.

Distributions to Date Status


Test types included


Equipment included

Sensing electrode, measuring electronics and display, TISAB reagent tablets, a sensor cap, four 3V button batteries, 1.2m neck-strap

Tests per kit

Unlimited fluoride measurements until the end of the life of the product.

Detection range

Fluoride: 0.1 – 9.99 ppm or mg/L

Processing time for one sample (hr)

<1 minute

Additional materials required


Power required (yes/no)


Complete kit weight (kg)

0.21 kg

Design Specifications

The Extech FL700 Fluoride meter incorporates a sensing electrode, measuring electronics, and display and comes with TISAB reagent tablets, a sensor cap, four 3V button batteries, and a 48? (1.2m) neckstrap. The system requires a 10 mL volume for testing and must be calibrated prior to each new measurement batch or if more than 12 hours has elapsed since last calibrated. See the user’s manual for more specific information. Dimensions of the FL700 fluoride meter are: 36 x 173 x 41 mm. Weight: 210g

Product Schematics

Technical Support

For questions, technical support, laboratory calibration certifications and repair services users can contact the Extech service and support.

Replacement Components

Replacement components include: FL705 Replacement Fluoride Electrode module for FL700 and FL704 TISAB Reagent Tablets (100 tablets).


This product includes a limited 1 year warranty. It has a ingress protection rating of IP57 which means it is protected against dust limited ingress and again the effect of immersion in liquid between 15 cm and 1m. Therefore having high durability, users must not exceed 1 m of immersion of this product in liquid. Also, for appropriate maintenance, users must follow the user’s manual.

Manufacturer Specified Performance Parameters

The Extech FL700 Fluorimete was designed to be quick and accurate in measuring fluoride ions in drinking water and other aqueous samples; to detect from 9.99 ppm or mg/L down to 0.1 ppm within one minute and with automatic temperature compensation.

Vetted Performance Status

Unknown, this product has been tested by a third-party for EC EMC Directive and RoHS Directive for CE Marking (see declaration of conformity here).


No known safety hazards are related to this product. The CE Mark that this product has certifies that it meets the EU health, safety and environmental requirements which ensure consumer safety.

Complementary Technical Systems


Academic Research and References


Compliance with regulations

This product is in compliance with EPA Method 340.2. (Potentiometric Ion Selective Electrode) and the EC EMC Directive and RoHS Directive for CE Marking. It is Waterproof to IP57. The Extech Instruments brand, under FLIR Commercial Systems, is certified to the ISO 9001:2015 standard.

Evaluation methods

The EPA Method 340.2 for Potentiometric Ion Selective Electrode, the EC EMC Directive and RoHS Directive for CE Marking and the Ingress Protection rating developed by the European Committee for Electro Technical Standardization.

Other Information

Watch a Fluoride measurement video to see product being used.

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