Testing & Measuring Tools

Take the guesswork out of growing with testing and measuring tools. Our range includes 2-in-1 and 4-in-1 soil moisture and pH meters, Aqua Master Tools pH pens and combo meters with buffer and calibration solutions, Ryset maximum and minimum thermometers, waterproof digital thermometers and soil probes. Checking pH, moisture and temperature helps you fix problems before plants suffer and fine-tune feeding in hydroponics and greenhouses. Calibrate meters regularly for accurate readings.

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Aqua Master Tools - H600 Pro Handheld Multiparameter Liquid Meter – Laboratory-Grade 5-in-1 pH, EC, TDS, PPM, & Temperature Analyzer Station

Aqua Master Tools - H600 Pro Handheld Multiparameter Liquid Meter – Laboratory-Grade 5-in-1 pH, EC, TDS, PPM, & Temperature Analyzer Station

$432.95
Aqua Master Tools - Replacement Substrate & Liquid EC Electrode – High-Shielding Large Pin Connection Multi-Parameter Probe

Aqua Master Tools - Replacement Substrate & Liquid EC Electrode – High-Shielding Large Pin Connection Multi-Parameter Probe

$109.90
Aqua Master Tools - Replacement pH Electrode with BNC Connector – Long-Life Double-Junction Glass Sensor Probe

Aqua Master Tools - Replacement pH Electrode with BNC Connector – Long-Life Double-Junction Glass Sensor Probe

$124.95
Aqua Master Tools - P700 Pro 2 Continuous Wall-Mount Combo Monitor – Rechargeable 5-in-1 pH, EC, CF, PPM, & Temperature Liquid Analyzer

Aqua Master Tools - P700 Pro 2 Continuous Wall-Mount Combo Monitor – Rechargeable 5-in-1 pH, EC, CF, PPM, & Temperature Liquid Analyzer

$492.95
Aqua Master Tools - P160 Pro Replacement Electrode – High-Precision 5-in-1 Multiparameter Sensor Cartridge

Aqua Master Tools - P160 Pro Replacement Electrode – High-Precision 5-in-1 Multiparameter Sensor Cartridge

$103.90
Aqua Master Tools - E60 Pro Replacement Electrode – High-Precision Multi-Parameter Conductivity, TDS, PPM, & Temperature Sensor Cartridge

Aqua Master Tools - E60 Pro Replacement Electrode – High-Precision Multi-Parameter Conductivity, TDS, PPM, & Temperature Sensor Cartridge

$58.95
Aqua Master Tools - E60 Pro Handheld Digital Conductivity Meter – Waterproof EC, PPM, TDS, & Temperature Liquid Analyzer

Aqua Master Tools - E60 Pro Handheld Digital Conductivity Meter – Waterproof EC, PPM, TDS, & Temperature Liquid Analyzer

$144.95
Aqua Master Tools - P110 Pro Combo Pen Meter – Waterproof 3-in-1 Handheld pH, EC, & Temperature Liquid Analyzer with Dry-Storage Technology

Aqua Master Tools - P110 Pro Combo Pen Meter – Waterproof 3-in-1 Handheld pH, EC, & Temperature Liquid Analyzer with Dry-Storage Technology

$194.95
Aqua Master Tools - Replacement Substrate EC Electrode – Heavy-Duty Unbreakable Stainless Steel Core Probe

Aqua Master Tools - Replacement Substrate EC Electrode – Heavy-Duty Unbreakable Stainless Steel Core Probe

$102.95
Aqua Master Tools - E300 Pro Handheld Digital Substrate EC & Temperature Meter – Heavy-Duty Soil, Coco, & Medium Penetration Probe

Aqua Master Tools - E300 Pro Handheld Digital Substrate EC & Temperature Meter – Heavy-Duty Soil, Coco, & Medium Penetration Probe

$246.90
Aqua Master Tools - Replacement Substrate pH Electrode – Heavy-Duty Spear-Tip Glass Probe with Universal BNC Connector

Aqua Master Tools - Replacement Substrate pH Electrode – Heavy-Duty Spear-Tip Glass Probe with Universal BNC Connector

$98.99
Aqua Master Tools - S300 Pro 2 Handheld Digital Substrate pH & Temperature Meter – Heavy-Duty Soil, Coco, & Medium Penetration Probe

Aqua Master Tools - S300 Pro 2 Handheld Digital Substrate pH & Temperature Meter – Heavy-Duty Soil, Coco, & Medium Penetration Probe

$262.95
Aqua Master Tools - E50 Replacement Electrode – High-Precision Modular Electrical Conductivity Combo Probe

Aqua Master Tools - E50 Replacement Electrode – High-Precision Modular Electrical Conductivity Combo Probe

$55.95
Aqua Master Tools - E50 Handheld Digital EC & Temperature Meter – Waterproof Hydroponic Nutrient & Fluid Conductivity Tester

Aqua Master Tools - E50 Handheld Digital EC & Temperature Meter – Waterproof Hydroponic Nutrient & Fluid Conductivity Tester

$123.90
Aqua Master Tools - P50 Handheld Digital pH & Temperature Meter – Waterproof Hydroponic Substrate & Solution Analyzer

Aqua Master Tools - P50 Handheld Digital pH & Temperature Meter – Waterproof Hydroponic Substrate & Solution Analyzer

$146.95
Treegers - Quantum PAR Meter Extendable Wand – Precision Canopy Reach Extension

Treegers - Quantum PAR Meter Extendable Wand – Precision Canopy Reach Extension

$33.95
Horticultural Measuring Jugs – Heavy-Duty Precision Liquid Dosing

Horticultural Measuring Jugs – Heavy-Duty Precision Liquid Dosing

From $2.90
Horticultural Measuring Cup – 60ml Precision Nutrient Dosing

Horticultural Measuring Cup – 60ml Precision Nutrient Dosing

$0.90
Horticultural Measuring Pipettes – 3ml Precision Transfer (Pack of 100)

Horticultural Measuring Pipettes – 3ml Precision Transfer (Pack of 100)

$11.95
Horticultural Measuring Syringes – Precision Nutrient & Additive Dosing

Horticultural Measuring Syringes – Precision Nutrient & Additive Dosing

From $15.95
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6 x Supercraft Level Box TLS3995 - 450mm - A Spirit Level for Checking Horizontal and Vertical Surfaces (Bundle Pack)

$191.88
$31.98/item
6x Brunnings 3-in-1 Soil Meter | Essential pH, Moisture & Light Tester (Bundle Pack)

6x Brunnings 3-in-1 Soil Meter | Essential pH, Moisture & Light Tester (Bundle Pack)

$100.90
Burgon & Ball - Planting Ruler – The Ultimate Precision Sowing Guide

Burgon & Ball - Planting Ruler – The Ultimate Precision Sowing Guide

$33.90
Burgon & Ball - Growing Gardeners Planting Ruler & Dibber - Seed Sowing Set

Burgon & Ball - Growing Gardeners Planting Ruler & Dibber - Seed Sowing Set

$30.90
Smile Home Outdoor/Indoor Thermometer - 10-Inch - Battery-Free Temperature Gauge for Home and Garden

Smile Home Outdoor/Indoor Thermometer - 10-Inch - Battery-Free Temperature Gauge for Home and Garden

$44.95
Aqua One - Glass Reservoir Thermometer – Precision Liquid Temperature Monitoring

Aqua One - Glass Reservoir Thermometer – Precision Liquid Temperature Monitoring

$4.90
6 x Gardman Soil Moisture Meter - Precision Hydration for Healthier Plants (Bundle Pack)

6 x Gardman Soil Moisture Meter - Precision Hydration for Healthier Plants (Bundle Pack)

$96.95
12 x Gardman Wall Thermometer - Essential Temperature Monitoring for Home & Garden (Bundle Pack)

12 x Gardman Wall Thermometer - Essential Temperature Monitoring for Home & Garden (Bundle Pack)

$55.90
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