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1,800+ results for orp

Smart Monitor Fish Tank WIFI SPA Pool Water Quality Meter PH ORP EC PPM Tester
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Brand New
S$ 114.58 to S$ 115.48
Top-rated sellerTop-rated seller
Was: S$ 132.74 13% off
llucky666 (790) 98.4%
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+S$ 14.74 postage
from China
17+ watchers
AZ8601 Handheld PH Meter PH & ORP Mv Temperature Meter Oxidation Reduction Meter
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Brand New
S$ 221.24
bucks-saver (5,464) 100%
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+S$ 73.75 postage
from China
ORP-169 Portable Water Quality Monitor Digital ORP Tester Pen Water ORP Meter
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Brand New
S$ 29.20
Top-rated sellerTop-rated seller
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homegooparts (11,224) 98.5%
+S$ 1.09 postage
from China
8 in 1 Water Quality Tester PH CF ORP for Fish Tank Aquariums Online Monitoring
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Brand New
S$ 129.80
white099 (72) 97.4%
or Best Offer
+S$ 46.14 postage
from China
29 watchers
Digital LCD PH/TDS/EC/ORP/TEMP/Salinity Water Quality Tester Meter Pen Detector
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Brand New
S$ 26.58 to S$ 47.04
Top-rated sellerTop-rated seller
Was: S$ 33.88 5% off
cowramill (5,244) 98.5%
Buy It Now
+S$ 5.89 postage
from China
2in1 / 4in1 Portable Tem H2 Orp Ph Meter Dissolved Hydrogen Water Quality Tester
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Brand New
S$ 26.05 to S$ 27.38
Top-rated sellerTop-rated seller
Was: S$ 28.01 7% off
modulefans (115,397) 99.1%
Buy It Now
+S$ 5.16 postage
from China
Portable 4 In 1 Hydrogen-Rich Test Pen PH/ORP/TEMP Water Quality Meter Tester
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Brand New
S$ 36.47
Top-rated sellerTop-rated seller
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meinianda (449) 96.7%
Free International Shipping
from China
Multi Parameter Water Quality Tester S.G PH EC SALT ORP TDS CF TEMP 8 In 1 R LLI
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Brand New
S$ 121.41
Top-rated sellerTop-rated seller
Was: S$ 129.15 6% off
lanyydi.living (430) 98.2%
or Best Offer
+S$ 1.46 postage
from China
PH-803W PH ORP Controller Acidity Alkalinity Controller Water Quality Monitor US
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Brand New
S$ 175.08
Top-rated sellerTop-rated seller
or Best Offer
figdlookit (1,825) 98.6%
Free International Shipping
from China
7in1 Tester Meter PH/ORP/EC/TEMP/S.G/SALT/TDS LCD Backlight Water Quality Tester
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Brand New
S$ 36.40
Top-rated sellerTop-rated seller
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kpitworth (188) 97.9%
Free International Shipping
from China
7 in 1 Digital LCD PH/TDS/EC/ORP/TEMP/SG/Salinity Water Quality Tester Meter Pen
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Brand New
S$ 41.51
Top-rated sellerTop-rated seller
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meinianda (449) 96.7%
Free International Shipping
from China
Tuya WiFi Water Quality Monitor PH/ORP/TDS/EC/CF/Temp/Humidity Testing Meter
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Brand New
S$ 119.46
Top-rated sellerTop-rated seller
Was: S$ 132.74 10% off
happylife8 (591) 97.6%
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+S$ 7.38 postage
from China
169E ORP Tester Waterproof Meter Sources Aquarium Hydroponics Spas Swimming Pool
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Brand New
S$ 65.95
Top-rated sellerTop-rated seller
Was: S$ 76.69 14% off
businessleader-0 (985) 100%
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Free International Shipping
from China
AZ8601 Handheld PH Meter PH & ORP Mv Temperature Meter Oxidation Reduction Meter
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Brand New
S$ 221.46
bucks-saver (5,464) 100%
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+S$ 73.83 postage
from China
Intelligent Wireless Water Quality Monitor PH/ORP/Salt Solar Residual Chlorine
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Brand New
S$ 151.32
kaariok (266) 100%
or Best Offer
+S$ 4.41 postage
from China
6 in 1 APP Data Water Quality Detector PH/EC/TDS/ORP Pool Residual Chlorine Pen
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Brand New
S$ 92.26
Top-rated sellerTop-rated seller
or Best Offer
biety0315 (2,198) 98.2%
+S$ 5.54 postage
from China
ORP REDOX Electrode 50 OHM BNC Type Replaceable for ORP Meter Tester Monitor
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Brand New
S$ 44.24
gxproducts (17,408) 100%
Buy It Now
Free International Shipping
from Hong Kong
6 In 1 Digital Water Quality Tester TDS EC PH ORP Chlorine Temp Meter Detector
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Brand New
S$ 101.49
Top-rated sellerTop-rated seller
or Best Offer
sun9rise (1,275) 98.2%
Free International Shipping
from China
Portable 4 In 1 Hydrogen-Rich Test Pen PH/ORP/TEMP Water Quality Meter Tester
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Brand New
S$ 36.02
Top-rated sellerTop-rated seller
Buy It Now
shiniaopi (2,059) 96.8%
Free International Shipping
from China
7 in 1 Digital LCD PH/TD/EC/ORP/TEMP/SG/Salinity Water Quality Tester Meter Pen
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Brand New
S$ 47.75
Top-rated sellerTop-rated seller
Was: S$ 55.52 14% off
happyimprovement (2,115) 97.9%
or Best Offer
Free International Shipping
from China
PH‑803W PH ORP Controller Acidity Alkalinity Controller Water Quality Monitor❤
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Brand New
S$ 175.06
Top-rated sellerTop-rated seller
or Best Offer
superdeal_store (18,395) 97.8%
Free International Shipping
from China
7 in 1 PH/ORP/EC/TEMP/SALT/S.G/TDS LCD Backlight Water Quality Tester Meter UK
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Brand New
S$ 47.97
tulistraders (636) 95%
or Best Offer
+S$ 9.23 postage
from United Kingdom
2in1 / 4in1 Portable Tem H2 Orp Ph Meter Dissolved Hydrogen Water Quality Tester
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Brand New
S$ 28.93 to S$ 35.95
Top-rated sellerTop-rated seller
Buy It Now
shieldsfans (88,460) 98.9%
+S$ 3.41 postage
from China
7 in 1 Pentype Tester PH / TDS / EC / ORP / Salinity / S.G. / Temperature Meter
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Brand New
S$ 60.33
gainexpress (71,188) 100%
or Best Offer
Free International Shipping
from Hong Kong
Water Quality Meter ORP PH TDS TEMP EC Salinity 7 In 1 Accurate Digital W FD
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Brand New
S$ 33.77
Top-rated sellerTop-rated seller
or Best Offer
fashiondress365 (17,337) 97.8%
+S$ 0.96 postage
from China
Digital LCD PH/TDS/EC/ORP/TEMP/Salinity Water Quality Tester Meter Pen Detector
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Brand New
S$ 27.98 to S$ 49.52
Top-rated sellerTop-rated seller
Buy It Now
gotw3527 (3,420) 99.2%
+S$ 5.89 postage
from China
Aquarium Water Tester Drinking Water Analyser Pen ORP Meter Oxidation Reduction
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Brand New
S$ 33.20
Top-rated sellerTop-rated seller
or Best Offer
microworld2050 (3,247) 99.5%
+S$ 7.36 postage
from China
Free returns
Digital LCD Mini ORP Meter Tester Aquarium Water Quality Analyzer 220V
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Brand New
S$ 66.38
eriba-984 (257) 90.5%
or Best Offer
Free International Shipping
from China
Intelligent Wireless Water Quality Monitor, PH/ORP/Salt, Solar Residual Chlorine
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Brand New
S$ 136.62
66soar66 (601) 96.4%
Was: S$ 146.90 7% off
or Best Offer
+S$ 4.41 postage
from China
ORP/PH 6750 Industrial Digital PH ORP Controller Meter for Water Treatment
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Brand New
S$ 249.71 to S$ 294.27
xinya002 (13) 93.3%
Was: S$ 309.76 5% off
Buy It Now
+S$ 29.49 postage
from China
Milwaukee pH58 MAX Waterproof 3-in-1 pH/ORP/Temp Tester with Replaceable Probe
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Brand New
S$ 253.71
getultimatenow (3,204) 100%
Buy It Now
+S$ 51.61 postage
from United States
8 in 1 Water Quality Tester PH CF ORP for Fish Tank Aquariums Online Monitoring
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Brand New
S$ 133.62
wandar66 (208) 98.7%
or Best Offer
Free International Shipping
from China
5 watchers
2 in 1 Digital High Precision PH Redox Controller Monitor Online PH ORP Tester
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Brand New
S$ 228.34
outletmalls_92 (1,166) 97%
Buy It Now
Free International Shipping
from China
Pen-Type ORP Meter Measure Household Drinking Quality Analysis Device H6M2
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Brand New
S$ 23.51
Top-rated sellerTop-rated seller
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teafans (32,184) 99.2%
Free International Shipping
from China
Meter Digital 7 in 1 //EC/ORP/S.G/Salinity/Temp Meter with ATC 0.01 S9K7
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Brand New
S$ 48.20
Top-rated sellerTop-rated seller
Buy It Now
css276 (2,098) 98.4%
Free International Shipping
from China
Calibration Digital Waterproof PH&ORP&Tem Meter Portable PH Pen Tester Automatic
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Brand New
S$ 138.50
Top-rated sellerTop-rated seller
or Best Offer
zheyansure (1,073) 99.2%
+S$ 10.89 postage
from China
New ListingAdvanced WiFi Water Quality Tester PH ORP EC PPM CF Humidity Temperature
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Brand New
S$ 149.77 to S$ 151.13
Top-rated sellerTop-rated seller
Buy It Now
sunshinehome66 (886) 100%
Free International Shipping
from China
2in1 / 4in1 Portable Tem H2 Orp Ph Meter Dissolved Hydrogen Water Quality Tester
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Brand New
S$ 30.25 to S$ 35.05
Top-rated sellerTop-rated seller
Buy It Now
microworld2050 (3,247) 99.5%
+S$ 7.36 postage
from China
Free returns
PH‑803W PH ORP Controller Acidity Alkalinity Controller WaterQuality Monitor US
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Brand New
S$ 200.03
Top-rated sellerTop-rated seller
Was: S$ 210.56 5% off
csvtion (1,662) 98.6%
or Best Offer
+S$ 1.46 postage
from China
Apera Instruments PCO60-Z Bluetooth pH
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Brand New
S$ 295.01
donkfella (239) 100%
or Best Offer
+S$ 111.26 postage
from United States
7in1 Smart Monitor Fish Tank WIFI Pool Water Quality Meter PH ORP EC PPM Tester
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Brand New
S$ 121.82
kaariok (266) 100%
Buy It Now
Free International Shipping
from China
9+ watchers
Water Quality Meter Tester Tool Backlight PH/TDS/EC/ORP/TEMP/SG/Salinity
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Brand New
S$ 33.45
Top-rated sellerTop-rated seller
or Best Offer
18_e0lljw (6,055) 93%
Free International Shipping
from China
Free returns
4 watchers
ORP Meter Controller ORP Water Quality Monitor For Aquarium -1999 to 1999mV
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Brand New
S$ 79.65
Top-rated sellerTop-rated seller
Was: S$ 88.50 10% off
vetus-instruments (558) 98.7%
or Best Offer
Free International Shipping
from China
PH / ORP Controller with pH Meter Redox Temp Tester App Remote Online Monitoring
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Brand New
S$ 168.14
gxproducts (17,408) 100%
Buy It Now
Free International Shipping
from Hong Kong
Portable Water Quality Monitor Digital ORP Tester Pen Detachable Water ORP Meter
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Brand New
S$ 28.45
Top-rated sellerTop-rated seller
Was: S$ 29.94 5% off
yonfhot (307) 99.7%
or Best Offer
+S$ 0.72 postage
from China
Meter Digital 7 in 1 //EC/ORP/S.G/Salinity/Temp Meter with ATC 0.01 E0Y0
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Brand New
S$ 50.11
Top-rated sellerTop-rated seller
Buy It Now
lalabellstore (25,490) 98.7%
Free International Shipping
from China
7-in-1 Water Quality Test Analyzer Tester PH SALT TEMP ORP EC SG Meter C-600
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Brand New
S$ 47.40
Top-rated sellerTop-rated seller
or Best Offer
usdealmarket (8,814) 97.4%
+S$ 0.57 postage
from China
New ListingORP-169 Type Water Quality Monitor ORP Meter Tester LCD Detector
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Brand New
S$ 36.84
Top-rated sellerTop-rated seller
Buy It Now
epingmall (3,310) 99.1%
Free International Shipping
from China
New ListingPen-Type ORP/TEMP Meter with Backlit Display Portable V7F9
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Brand New
S$ 28.01
Top-rated sellerTop-rated seller
Buy It Now
quickkway (343,970) 98%
Free International Shipping
from China
Redox Tester ORP Test High Water Quality Tester Water Detector Portable Aquarium
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Brand New
S$ 30.45
Top-rated sellerTop-rated seller
Was: S$ 32.39 6% off
fungee33 (26,589) 98.2%
or Best Offer
+S$ 0.90 postage
from China
10 in 1 /EC//ORP/H2/Fertile/Salinity/S.G/MΩ/Temp Quality Meter D7B8
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Brand New
S$ 42.94
Top-rated sellerTop-rated seller
Buy It Now
lalabellstore (25,490) 98.7%
Free International Shipping
from China
Tuya LCD WiFi 7-in-1 PH Acid Alkali TDS Hardness ORP/CF/EC Temperature Humidity
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Brand New
S$ 129.18
Top-rated sellerTop-rated seller
Buy It Now
biety0315 (2,198) 98.2%
+S$ 7.38 postage
from China
7 in 1 ORP PH TDS EC SG SALT TEMP Water Quality Tester Meter Online Blue Tooth
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Brand New
S$ 66.38
szsunwin (3,042) 92.9%
Buy It Now
+S$ 11.80 postage
from China
New ListingBlue Tooth-compatible Water Quality Pen 7 In 1 PH/EC/TDS/ORP/SALT/S.G/TEMP Meter
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Brand New
S$ 69.90
factorymachinesellworld (0) 0%
Buy It Now
+S$ 17.70 postage
from China
Free returns
7In1 Digital Salinity PH TDS TEMP SG EC ORP Tester Water Quality Monitor Meter
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Brand New
S$ 40.73
Top-rated sellerTop-rated seller
or Best Offer
topteng-11 (439) 99.4%
Free International Shipping
from China
Free returns
7 In 1 PH EC Conductivity TDS Salinity ORP SG Blue Tooth Meter Tester Measures S
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Brand New
S$ 66.41
Top-rated sellerTop-rated seller
Buy It Now
superplaza-05 (2,815) 98.1%
Free International Shipping
from China
Free returns
New 4 In 1 Hydrogen-Rich Test Pen PH/ORP/TEMP Water Quality Meter Tester
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Brand New
S$ 36.30
Top-rated sellerTop-rated seller
or Best Offer
eforshop-04 (605) 97.7%
Free International Shipping
from China
Free returns
Digital PH ORP Meter With Temperature Measurement Water Quality Tester For
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Brand New
S$ 30.77
Top-rated sellerTop-rated seller
Was: S$ 32.39 5% off
figdlookit (1,825) 98.6%
Buy It Now
+S$ 7.36 postage
from China
7 in 1 //EC/ORP/S.G/Salinity/ Multi-Parameter Pocket A6W8
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Brand New
S$ 29.37
Top-rated sellerTop-rated seller
Was: S$ 31.24 6% off
ndo624 (2,699) 99%
Buy It Now
Free International Shipping
from China
ORP Meter Pen Fast Reading Backlight Water Tester Accurate Negative Potential YT
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Brand New
S$ 28.99
ytrtdca (6) 87.5%
or Best Offer
Free International Shipping
from China
PH‑803W PH ORP Controller Acidity Alkalinity Controller Water Quality Monitor EU
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Brand New
S$ 179.62
Top-rated sellerTop-rated seller
or Best Offer
superstockshop (1,754) 98.8%
+S$ 7.36 postage
from China
7 in 1 Digital LCD PH/TD/EC/ORP/TEMP/SG/Salinity Water Quality Tester Meter Pen
Opens in a new window or tab
Brand New
S$ 51.41
Top-rated sellerTop-rated seller
or Best Offer
huossbillsh (2,873) 98.8%
Free International Shipping
from China
Backlight Water Testing Meter Pen Tester New PH/TDS/EC/SALT/SG/ORP/TEMP 7 in 1
Opens in a new window or tab
Brand New
S$ 42.30
cardiffee (99) 98.4%
or Best Offer
Free International Shipping
from China
Handheld PH ORP Meter Digital Oxygen Concentration Temperature Meter Detector
Opens in a new window or tab
Brand New
S$ 265.51
Top-rated sellerTop-rated seller
Was: S$ 295.01 10% off
vetus-instruments (558) 98.7%
or Best Offer
Free International Shipping
from China
Portable 4 In 1 Hydrogen-Rich Test Pen PH/ORP/TEMP Water Quality Meter Tester
Opens in a new window or tab
Brand New
S$ 36.30
Top-rated sellerTop-rated seller
or Best Offer
topteng-11 (439) 99.4%
Free International Shipping
from China
Free returns
ORP‑100 Digital Water Quality Tester 2‑in‑1 Portable Temperature ORP Meter
Opens in a new window or tab
Brand New
S$ 44.02
hydujstore (456) 97.3%
or Best Offer
+S$ 0.96 postage
from China
Pool Water Liquid Quality Test Kit 6 in 1 PH TDS ORP EC CL TEMP Tester Analyzer
Opens in a new window or tab
Brand New
S$ 92.26
smoothly2020 (1,202) 98.8%
or Best Offer
Free International Shipping
from China
Multi Parameter Water Quality Tester S.G PH/EC/SALT/ORP/TDS/CF/TEMP 8 In 1 230V
Opens in a new window or tab
Brand New
S$ 116.79
Top-rated sellerTop-rated seller
Was: S$ 122.94 5% off
csvtion (1,662) 98.6%
or Best Offer
Free International Shipping
from China
6 in1 Multi-Parameter Water Quality Monitor ORP/pH/EC/TDS/CF/mV/Temp Monitor
Opens in a new window or tab
Brand New
S$ 177.43
Top-rated sellerTop-rated seller
Was: S$ 197.15 10% off
vetus-instruments (558) 98.7%
or Best Offer
+S$ 14.74 postage
from China
7 watchers
ORP-969 Redox Meter ORP Tester Portable Digital Water Quality Tester Pen Tool
Opens in a new window or tab
Brand New
S$ 36.24
kuzip33 (88) 100%
or Best Offer
+S$ 0.96 postage
from China
8 in 1 Water Quality Tester PH/ORP/EC/SAL Fish Tank Aquariums Online Monitoring
Opens in a new window or tab
Brand New
S$ 133.86
Top-rated sellerTop-rated seller
Was: S$ 178.48 25% off
apple*2012 (2,624) 98.7%
Buy It Now
Free International Shipping
from China
AUHX Digital ORP Meter Conductivity Test Pen For Aquariums Automatic FD
Opens in a new window or tab
Brand New
S$ 33.78
Top-rated sellerTop-rated seller
or Best Offer
fashiondress365 (17,337) 97.8%
+S$ 0.96 postage
from China
Multi Parameter Water Quality Tester S.G PH EC SALT ORP TDS CF TEMP Monitor ⊹
Opens in a new window or tab
Brand New
S$ 120.41
creativeonline100 (208,039) 100%
Was: S$ 128.10 6% off
or Best Offer
+S$ 0.96 postage
from China
10in1Water Quality Tester PH/TDS/EC/SALT/TEMP/S.G/ORP/H2/Fertile/Resistivity Pen
Opens in a new window or tab
Brand New
S$ 83.58 to S$ 87.20
Top-rated sellerTop-rated seller
Was: S$ 92.85 10% off
adellamart88 (225) 98.3%
Buy It Now
+S$ 29.50 postage
from China
7 in1 Smart Monitor Fish Tank Aquarium WIFI SPA Pool Water Quality Meter PH ORP
Opens in a new window or tab
Brand New
S$ 160.32
Top-rated sellerTop-rated seller
Buy It Now
dobetter92 (939) 98.4%
Free International Shipping
from China
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