Photometer 7500

  • Benchtop kit (PTBR7500)
  • Standard kit (PTBH7500)
  • Engineers' kit (PTBW7500)

The multiparameter 7500 is our most popular photometer due its versatility and simplicity of use. Reliable and intuitive, it has been designed to simplify the process of testing and managing water quality data.

The Photometer 7500 includes over 100 tests with the capability to add your own tests to the instrument.

  • Effortlessly store your data and transfer them to the Palintest Aqua Pal app with Bluetooth connectivity.
  • Downloadable data log with 500 results, including time and date of test
  • Develop your own tests - load them via the USB port into your photometer with a simple software tool.
  • Dual light source photometer offering direct-reading of pre-programmed test calibrations
Photometer 7500

Palintest AquaPal app

Available for iOS and Android, the AquaPal app provides seamless data management for the Photometer 7500 Bluetooth® instrument, with manual data upload from any other testing device

Improved data management

The Photometer 7500 includes Bluetooth connectivity. Create sample and user ID’s, store results and upload user-defined calibrations, then transmit all data to and from other Bluetooth devices to support traceability control and data analyses.

Compatible with Tubetest Reagents

With a range of parameters available, the Palintest Tubetests system offers a method which is both practical and convenient. Options include COD (Chemical Oxygen Demand), nutrient analyses such as Ammonia and Total Nitrogen, and metals such as Chromium, Nickel, and Zinc.

Portable Water Quality Test Kits

The 7500 comes in a variety of kit options so as to provide a solution to the specific demands of environments ranging from the laboratory to the field. Select the Benchtop Kit for the instrument only option, the Standard Kit for a portable kit, or the Engineers kit for the fully functional laboratory on the go.

Palintest AquaPal app
Improved data management
Compatible with Tubetest Reagents
Portable Water Quality Test Kits


Instrument Type Dual light source photometer offering direct-reading of pre-programmed test calibrations, Absorbance and Transmittance
Peak Wavelengths 450 nm, 500 nm, 550 nm, 570 nm, 600 nm, 650 nm
Accuracy ± 1.0% T
Display 320 x 240 pixel LCD with backlight and contrast adjustment
User Interface On-screen prompts available in English, French, Spanish, German, Italian, Turkish and Mandarin (Chinese)
Size (WxLxH) and weight 150 x 250 x 70 mm, 975g
IP Rating IP67
Power Supply 3x 1.5V AA batteries (typically 40 hours), mains power delivered by USB port
Connectivity Palintest Bluetooth (4.0) profile and USB for data download
User Defined Methods Up to 30 additional methods
Memory Capacity Up to 500 data sets. Each data set includes date, time, sample ID, operator ID, method number, method name, result, units
Test Cuvettes Automatic centering for cylindrical cuvettes from 13 to 20 mm OD


Select a consumable type to view details and download the related instruction and safety sheet documents for consumables


Photometer Check Standards

PT804 - Photometer 7100/7500, Pooltest 10/25 PT802 - Photometer 8000

View Details

Additional Information

Standard kit
Benchtop kit
Engineers' kit
Photometer 7500 Bluetooth

8 10 8
Cuvette rack

Lint free cloth

20 ml syringe
10 ml syringe
Dilution tube 2
Cuvette brush
Crush/stir rod
USB lead
Waterproof USB lead
USB power adaptor
De-Ion pack
Multiparameter (pH, EC, TDS, Salinity) Pocket Sensor
pH and conductivity calibration solutions
Check Standards
Hard carry case
Transport carton
IP67 carry case

Instructions & Brochures

Maintenance and Servicing Guide

Maintenance and Servicing Guide for Single and Multiparameter Photometers


Multiparameter Photometer Brochure

Download the Brochure to view the full range of photometers in this product line, together with the list of compatible reagents and accessories.


User Manual

Photometer 7500 instrument instructions.


Research & Insights

Calibrating Palintest Photometers

Palintest calibrate photometers using certified colour standards that are traceable back to National Physical Laboratory (NPL) standards.


Free and combined chlorine - understand the difference

Testing the water for both free and combined chlorine allows you to know whether the water you've chlorinated is of sufficient quality to drink or disinfect your process, depending upon your application.


Iron testing - which method to use?

The three Palintest iron test ranges rely on different chemical methods. Find out here which one is right for your application.


What is a Photometer Check Standard?

A check standard is a product Palintest offer that allows you to check the performance of your Palintest photometer wherever you are.


What is KH and GH in Aquarium Water Test Kits?

In aquariums and fish farms, you need to be able to differentiate between Carbonate Hardness (KH) and Total Hardness (GH).