From £15.99
ebay.co.uk
- From £5.99
NT Labs Narrow PH Test
pond-planet.co.uk
- From £8.95
Lineco PH Testing Pen
- £4.00
Premium Digital Ph Meter - Wide 0 00-14 00 Ph Range Accurate Water
- £5.89
NT Labs Aquarium Lab PH 6-7.6 Test Kit
- From £9.99
Hardys PH Meter Tester Pen Digital Electronic Hydroponics Aquarium Water Test Kit UK
diy.com
- £16.95
Essentials Lab Ph Control Kit 250ml & Ph Test Kit & 3ml Pipette
- From £121.85
Milwaukee Instruments MW102 PH and Temperature Meter
- From £39.99
PH & Temperature 2-in-1 Continuous Monitor Meter W/Backlight Replaceable Electrode
dhgate.com
- £15.98
Vivosun Digital Ph And Tds Meter Kits, 0.01ph High Accuracy Pen Type
- £9.56
Swimming 2 Way Liquid Test Kit - Ph & Chlorine Levels For Swimming
- From £37.90
2 in 1 Temperature PH Monitor Meter Tester Sensor Test Kit 0~14.0 PH Measure Automatic Calibration BNC Electrode Probe For Hydroponics Aquarium Lab
- £4.99
T.a. Ph Test Kit 30ml
- £9.13
pH Testing Pen
etsy.com
- £7.10
Essentials Lab Ph Test Kit Wide Spectrum Indicator Hydroponics