pH, EC & TDS
Showing 33–48 of 94 results
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GH pH Control Kit (12/Case) (722080)
SALE 47% OFF! Original price was: $273.00.$144.45Current price is: $144.45. Add to cart -
GH pH Up Liquid Gallon (4/Case) (722095)
SALE 47% OFF! Original price was: $156.24.$82.60Current price is: $82.60. Add to cart -
Aqua Master E300 Pro Substrate EC/Temp (AMT1035)
SALE 30% OFF! Original price was: $149.95.$105.18Current price is: $105.18. Add to cart -
HM Digital Replacement Probe COM-300 (HM-SP-C3)
SALE 23% OFF! Original price was: $62.95.$48.48Current price is: $48.48. Add to cart -
Active Air 3-Way Meter (MGMLP1)
SALE 49% OFF! Original price was: $13.09.$6.70Current price is: $6.70. Add to cart -
GroStar GS3 EC Pen (AI11030)
SALE 36% OFF! Original price was: $113.99.$73.18Current price is: $73.18. Add to cart -
HM Digital Replacement TDS/EC sensor for COM-100 (HM-SP-C1)
SALE 24% OFF! Original price was: $34.95.$26.40Current price is: $26.40. Add to cart -
GroStar GS2-E replacement Soil Spear pH electrode (AI58020)
SALE 36% OFF! Original price was: $181.99.$115.74Current price is: $115.74. Add to cart -
HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml) (HMDC1000)
SALE 14% OFF! Original price was: $9.49.$8.15Current price is: $8.15. Add to cart -
HM Digital Pro Series Pen style pH/Temp meter (HM-PH-200)
SALE 24% OFF! Original price was: $99.95.$75.60Current price is: $75.60. Add to cart -
HM Digital Replacement pH sensor for HM-500/ HM-200 (HM-SP-P5)
SALE 22% OFF! Original price was: $54.95.$43.02Current price is: $43.02. Add to cart -
HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp (HMD500)
SALE 36% OFF! Original price was: $359.00.$230.05Current price is: $230.05. Add to cart -
Aqua Master P50 Pro pH Temp Electrode (AMT1001)
SALE 29% OFF! Original price was: $34.95.$24.72Current price is: $24.72. Add to cart -
Aqua Master S300 Pro 2 pH Electrode (AMT1031)
SALE 30% OFF! Original price was: $69.95.$48.78Current price is: $48.78. Add to cart -
GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen (AI21040)
SALE 36% OFF! Original price was: $178.99.$113.83Current price is: $113.83. Add to cart -
HM Digital PH-80 pH/Temperature Meter (HMDPHM80)
SALE 36% OFF! Original price was: $46.50.$29.87Current price is: $29.87. Add to cart
Showing 33–48 of 94 results