Compact Ammonia+ Meter

  • Ammonia+ kit, soft case (PTS041)
  • Ammonia+ kit, hard case (PTH041)

Portable ammonia and ammonium measurement by the Nessler method with a choice of operating ranges up to 100 mg/L.

Designed for wastewater and environmental monitoring, the Compact Ammonia+ Meter uses the Nessler method for ammonia measurement including a high range reagent ideal for ammonia monitoring in the nitrification process:

  • Rapid and accurate analysis with a well-established technique
  • IP67 waterproof and battery powered instrument – ideal for field use
  • Simple operation coupled with pre‑formulated Tubetests® reagents – suitable for all users.
Compact Ammonia+ Meter


Measuring System Single LED source, direct-reading colorimeter
Ranges 0 to 15 mg/L N, 0 to 50 mg/L N, 0 to 100 mg/L N
Display High clarity LCD with backlight
User Interface Blank, read, function and power keys
Data Storage Last 10 results
Size (W x L x H) 65 x 150 x 40 mm
Weight 200g (including batteries)
Power Supply 2 x AA batteries


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


NDF Check Standards for Compact Ammonia Meters

Neutral Density Filter validation standards for calibrating Compact Ammonia Photometers. Supplied in a hard case with certificate.

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Additional Information

Ordering Code Contents
PTS041 Compact Ammonia+ Meter. Comprising: Tubetests adaptor (PT 565) and
instruction manual. Supplied in a soft case with belt loop.
PTH041 Compact Ammonia+ Meter. Comprising: Tubetests adaptor (PT 565) and
instruction manual. Supplied in a hard case.

Instructions & Brochures

Compact Photometers Brochure

Download the brochure to view the full range of single parameter photometers in this product line, together with the list of consumables and accessories.


Maintenance and Servicing Guide

Maintenance and Servicing Guide


User Manual

Download step-by-step instructions for operating the Ammonia+ Meter.


Research & Insights

Calibrating Palintest Photometers

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