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 Discount Instrument is an online distributor for a range of professional instruments. We offer internet-leading prices made possible through the online nature of our ecommerce distribution method. We provide excellent customer services and competitive prices.
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Items are dispatched by Registered Air Mail from Hong Kong within 2 business days after we have received your cleared payment. Delivery is approximately 8-18 days, in most cases, it takes 7-10 days. We make sure that your ordered item(s) leaves our facility in a timely manner. Insurance is included in the Shipping & Handling costs you paid and charge the same shipping cost to customers worldwide (same shipping cost to United States, Europe and Australia).
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60 results found in PH Meters / Controllers
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7-in-1 Digital Water Quality Monitor Pool pH °C °F ORP EC CF TDS Meter Tester
 
Buy It Now or Best Offer
$117.58
Free shipping
Time left:2h 40m
0.00~14.00PH Digital pH CO2 Controller Meter  Aquarium Fish Tank 110V or 220V
 
Buy It Now or Best Offer
$101.64
Free shipping
Time left:1d 6h 21m
Durable pH Electrode BNC 3m Cable Buffer Solutions Water Meter Tester Aquarium
 
Buy It Now or Best Offer
$27.96
Free shipping
Time left:3d 3h 53m
pH Buffer Calibration Powder Solution Tester Meter 4.01, 7.00 10.01pH set
 
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$8.77
Free shipping
Time left:4d 21h 54m
CL2 Chlorine pH Level Meter Swimming Pool Checker Spa Water Quality Tester Tool
 
Buy It Now or Best Offer$23.32Time left:9d 21h 47m
LCD Digital pH / Temp °C °F Meter IP65 Water Quality Tester w/ Auto Calibration
 
Buy It Now or Best Offer
$33.78
Free shipping
Time left:10d 1h 55m
0 ~14.00 pH Meter Digital Water Quality Monitor Tester Hydroponic Aquarium Spa
 
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$26.32
Free shipping
Time left:10d 2h 44m
LCD Digital pH / Temp °C °F Meter IP65 Water Quality Tester w/ Auto Calibration
 
Buy It Now or Best Offer
$34.64
Free shipping
Time left:10d 2h 44m
pH Electrode Long Cable With BNC 2 x Buffer Calibration Solution 0.00~14.00pH
 
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$22.77
Free shipping
Time left:10d 2h 45m
Digital pH Monitor Tester 14.00 pH Range Aquariums w/ Rechargeable Meter Adaptor
 
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$53.86
Free shipping
Time left:10d 2h 45m
Digital pH Meter Tester Monitor Meter ATC w/ Replaceable BNC Electrode Generic
 
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$27.60
Free shipping
Time left:10d 2h 45m
2in1 Digital pH & Temperature Meter Tester Thermometer °C °F Test Water w/ ATC
 
Buy It Now or Best Offer
$49.36
Free shipping
Time left:10d 2h 45m
7-in-1 Digital Water Quality Monitor Pool pH °C °F ORP EC CF TDS Meter Tester
 
Buy It Now or Best Offer
$109.46
Free shipping
Time left:10d 2h 45m
Digital pH CO2 Controller METER  Aquarium Fish Tank 110V or 220V
 
Buy It Now or Best Offer
$105.54
Free shipping
Time left:10d 2h 45m
Digital pH Controller Meter Tester + Replaceable BNC Electrode 220V/110V Generic
 
Buy It Now or Best Offer
$103.89
Free shipping
Time left:10d 2h 45m
2in1 Digital pH ORP Controller Aquarium Pond Meter Tester 1 Socket 220V or 110V
 
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$125.60
Free shipping
Time left:10d 2h 45m
Pen Type Digital pH Meter 0.00~14.00pH Tester for Wine Hydrophonics Aquaculture
 
Buy It Now or Best Offer
$18.59
Free shipping
Time left:10d 2h 46m
0~14.00 Pen Type pH Meter 12cm Long tube Hydrophonics Quality Control Measurer
 
Buy It Now or Best Offer
$39.77
Free shipping
Time left:10d 2h 46m
Digital Water Quality Tester ORP TDS Temperature Salinity pH Combo Meter IP57
 
Buy It Now or Best Offer
$108.21
Free shipping
Time left:10d 2h 47m
Professional PH Temperature Meter High Accuracy ±0.05PH Water Quality Tester
 
Buy It Now or Best Offer
$52.03
Free shipping
Time left:10d 2h 48m
Digital pH Meter Tester Monitor w/ Replaceable BNC Electrode & Mounting Bracket
 
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$29.29
Free shipping
Time left:10d 2h 48m
Digital pH & Temperature Meter  Pocket Water Tester Thermometer °C or °F IP67
 
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$33.31
Free shipping
Time left:10d 2h 48m
Pen Type Digital pH Level Meter Tester Thermomete​r (°C) Hydrophonic Spa Generic
 
Buy It Now or Best Offer
$32.54
Free shipping
Time left:10d 2h 48m
Portable Digital pH Meter 0.00~14.00pH Tester for Wine Hydrophonics Aquaculture
 
Buy It Now or Best Offer
$17.90
Free shipping
Time left:10d 2h 49m
Portable pH, Chlorine Swimming Pool Tester  Water  Quality Hydrotool Testing Kit
 
Buy It Now or Best Offer
$18.59
Free shipping
Time left:10d 2h 50m
Durable pH Electrode BNC 3m Cable Buffer Solutions Water Meter Tester Aquarium
 
Buy It Now or Best Offer
$26.85
Free shipping
Time left:10d 2h 52m
pH Electrode Long Cable With BNC  2 x Buffer Calibration Solution 0.00~14.00pH
 
Buy It Now or Best Offer
$23.94
Free shipping
Time left:10d 2h 52m
Portable Waterproof Digital pH Meter Thermometer Tester Hydroponics Laboratory
 
Buy It Now or Best Offer
$31.29
Free shipping
Time left:10d 2h 52m
0 ~14.00 pH Meter Digital Water Quality Monitor Tester Hydroponic Aquarium Spa
 
Buy It Now or Best Offer
$26.62
Free shipping
Time left:10d 2h 52m
Digital pH Monitor Tester 14.00 pH Range Aquariums w/ Rechargeable Meter Adaptor
 
Buy It Now or Best Offer
$56.05
Free shipping
Time left:10d 2h 52m
2-in-1 Digital pH & Temperature Meter Tester Thermometer °C °F Test Water w/ ATC
 
Buy It Now or Best Offer
$46.84
Free shipping
Time left:10d 2h 52m
Digital pH Pen Meter Tester 2 Buffer Hydroponic Aquarium 14.00 pH Range Generic
 
Buy It Now or Best Offer
$19.52
Free shipping
Time left:10d 2h 53m
Digital ph Orp (2 in 1) Controller BNC Electrodes Redox mV CO2 O3 220V or 110V
 
Buy It Now or Best Offer
$136.30
Free shipping
Time left:10d 21h 10m
LCD Digital pH / Temp °C °F Meter IP65 Water Quality Tester w/ Auto Calibration
 
Buy It Now or Best Offer
$31.80
Free shipping
Time left:11d 5h 41m
2-in-1 Digital pH & Temperature Meter Tester Thermometer °C °F Test Water w/ ATC
 
Buy It Now or Best Offer
$45.79
Free shipping
Time left:11d 5h 41m
2in1 Digital pH ORP Controller Aquarium Pond Meter Tester Tool 1 Socket Generic
 
Buy It Now or Best Offer
$121.55
Free shipping
Time left:13d 21h 42m
Portable pH, Chlorine Swimming Pool Tester Water Quality Hydrotool Testing Kit
 
Buy It Now or Best Offer
$17.46
Free shipping
Time left:14d 0h 16m
Digital pH Temperature Meter High Accuracy ±0.05PH Water Quality Tester Aquarium
 
Buy It Now or Best Offer
$48.64
Free shipping
Time left:15d 0h 13m
3-in-1 ORP mV, PH, Temperature Meter Tester  w/ Replaceable pH & ORP Electrodes
 
Buy It Now or Best Offer
$107.50
Free shipping
Time left:18d 23h 55m
0~14.00 Pen Type pH Meter 12cm Long tube Hydrophonics Quality Control Measurer
 
Buy It Now or Best Offer
$37.24
Free shipping
Time left:19d 2h 43m
6-in-1 Multi-Function Water Quality Tester Meter  EC CF TDS PH °C °F  Hydroponic
 
Buy It Now or Best Offer
$94.84
Free shipping
Time left:19d 22h 16m
Digital Water Quality Tester ORP TDS Temperature Salinity pH Combo Meter Generic
 
Buy It Now or Best Offer
$106.90
Free shipping
Time left:20d 22h 10m
Salinity Temperature Tester High Accuracy Meter 0~70ppt NaCL °C / °F ATC IP65
 
Buy it now
$35.22
Free shipping
Time left:22d 4h 32m
Salzgehalt Messgerät  Temperatur ºC / °F Maßnahme 70ppt  Wasser Qualität IP65
 
Buy it now
$37.49
Free shipping
Time left:22d 4h 32m
Salinity Temperature Tester High Accuracy Meter 0~70ppt NaCL °C / °F ATC IP65
 
Buy it now
$38.01
Free shipping
Time left:22d 4h 32m
Salinidad Temperatura Ensayador Alto Exactitud Metro 0~70ppt NaCL °C/°F ATC IP65
 
Buy it now
$36.08
Free shipping
Time left:22d 4h 32m
Salinità Temperatura Tester Alto Precisione Meter 0~70ppt NaCL °C / °F ATC IP65
 
Buy it now
$36.08
Free shipping
Time left:22d 4h 32m
Salinité Mètre Avec Température ºC / °F Mesure 70ppt  Eau Qualité Testeur IP65
 
Buy it now
$36.08
Free shipping
Time left:22d 4h 32m
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