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Apera GroStar Series GS4 pH/EC/500ppm/700ppm Multiparameter Pen Tester Kit (Gen II) with Replaceable pH/EC Probe for Hydroponics Water Quality Testing

4.5

£ 331.00

Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe

£ 66.81

Apera Instruments GroStar Series GS2-E Replacement Soil Spear pH Probe (AI802G)

£ 241.00

Apera GroStar Series GS2 Soil pH Pen Tester Kit (Gen II) for Direct Soil Test and Nutrient Solutions Test with Replaceable Spear pH Probe

4.4

£ 699.00

GROSMIMI Flip Top Spill Proof Sippy Cup with Stage 2 Straw for Toddlers, Customizable, PPSU, BPA Free 10 oz (Unicorn)

£ 26.37

Apera Instruments GroStar Series GS1-E Replacement pH Probe

£ 48.18

GroStar EC Calibration Kit (2.77 EC, 8 oz. Each)

5.0

£ 28.00

Apera GroStar Series GS1 pH Pen Tester Kit (Gen II) with Replaceable pH Probe for Hydroponics Water Quality Testing

4.3

£ 182.28

Apera Instruments GroStar Series GS3-E Replacement EC Probe

£ 46.48

The Gro Company Gro-Clock Sleep Trainer

4.4

£ 53.00

Apera Instruments AI103G GroStar Series GS3 EC/500ppm/700ppm Pen Tester Kit with Replaceable Titanium EC Probe for Hydroponics Water Quality Testing, Gen II

4.5

£ 85.99

GroStar EC Calibration 2.77 EC, 8 oz

£ 47.33