pH Test Kit, 1 oz $7.54 (EACH)

General Hydroponics-pH Test Indicator 8 oz $10.76 (EACH)

General Hydroponics-pH 4.01 Calibration Solution 1 qt $21.50 (EACH)

General Hydroponics-pH 7.0 Calibration Solution 1 qt $21.50 (EACH)

General Hydroponics-1500 ppm Calibration Solution 1 qt $21.50 (EACH)

Technaflora-pH Down, 10 lt $46.82 (EACH)

Technaflora-pH Down, 4 lt $24.42 (EACH)

Technaflora-pH UP, 10 lt $46.82 (EACH)

Technaflora-pH UP, 4 lt $24.42 (EACH)

Earth Juice-Natural pH Up, 2lbs. $18.15 (EACH)

Earth Juice-Natural pH Down, 1.6 lbs. $16.14 (EACH)

Earth Juice-Natural pH Down 7.8lb $57.56 (EACH)

Earth Juice-Natural pH Up, 10 lb $69.06 (EACH)

Bluelab pH meter with probe $200.00 (EACH)

Bluelab Truncheon EC/CF/PPM $135.00 (EACH)

BlueLab Combo Meter EC/CF/PPM-C/F $295.00 (EACH)

BlueLab-Soil pH Meter $245.00 (EACH)

BlueLab-Soil pH Probe $105.00 (EACH)

Hanna-Checker pH Tester with Replaceable Electrode $39.35 (EACH)

Hanna-Champ pH Tester $61.95 (EACH)

Hanna-pHep pH Tester $65.95 (EACH)

Hanna-GroChek pHEP 4 Meter $113.95 (EACH)

Hanna-GroChek pH Tester $109.95 (EACH)

Hanna-DiST 5 EC/TDS Meter $130.95 (EACH)

Hanna-Combo pH/EC/TDS/C/PPM Tester $198.95 (EACH)

Hanna-GroChek pH Indicator w/Electrode $115.95 (EACH)

Hanna-GroChek EC/TDS Monitor w/ HI7632 EC Probe $115.95 (EACH)

Hanna-GroChek pH/EC/TDS/Temp. Combo $203.95 (EACH)

Hanna-GroChek pH & TDS Combo Continuous Reading Meter $203.95 (EACH)

Oakton-Eco Tester TDS $95.95 (EACH)

HM-AquaPro TDS/Temperature Meter $44.95 (EACH)

HM-Waterproof EC/TDS/Temp Combo Meter $74.95 (EACH)

Milwaukee-EC65 Waterproof Tester $76.95 (EACH)

Milwaukee-TDS/PPM T75 Tester WP $73.95 (EACH)

Milwaukee-Waterproof pH Tester $73.95 (EACH)