Rohs Tester(35)
Uses item details. Price when purchased online
CoreLiving 4 in 1 Digital Water Tester and TDS Meter with EC & Temperature (C/F) Function, 0-9999 ppm Water Quality Test Kit for Drinking Water, RO/DI System, Aquariums and Hydroponics, 1 Tester $4.64
$464
current price $4.64CoreLiving 4 in 1 Digital Water Tester and TDS Meter with EC & Temperature (C/F) Function, 0-9999 ppm Water Quality Test Kit for Drinking Water, RO/DI System, Aquariums and Hydroponics, 1 Tester
Clearance Instant Meter Digital Water Tester for Drinking Water | Accurate 09990 PPM EC & Temp Readings | Ideal for RO Systems,Aquariums,Pools Built for Professionals,Easy for Anyone,0.94x5.51 inch (Blue) $5.99 Was $7.09
Now$599
current price Now $5.99, Was $7.09$7.09
Instant Meter Digital Water Tester for Drinking Water | Accurate 09990 PPM EC & Temp Readings | Ideal for RO Systems,Aquariums,Pools Built for Professionals,Easy for Anyone,0.94x5.51 inch (Blue)
Digital Water Quality Tester: 4-in-1 TDS Meter (TDS,EC,Temp C/F) | 0-9990 ppm | Perfect for Drinking Water,RO Systems & Pools $4.48
$448
current price $4.48Digital Water Quality Tester: 4-in-1 TDS Meter (TDS,EC,Temp C/F) | 0-9990 ppm | Perfect for Drinking Water,RO Systems & Pools
Clearance 4 in 1 TDS Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter, 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc Was $8.69
4 in 1 TDS Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter, 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
2025 AllNew 4 in 1 Tds Meter Digital Water Tester Accurate And Reliable Tds Ec & Temp(°C ,°F) Meter 09990Ppm Professional Testing for Drinking Water, Ro/Di System, Aquariums Etc Was $6.59
2025 AllNew 4 in 1 Tds Meter Digital Water Tester Accurate And Reliable Tds Ec & Temp(°C ,°F) Meter 09990Ppm Professional Testing for Drinking Water, Ro/Di System, Aquariums Etc
Portable 4-in-1 Digital TDS Water Tester Meter with EC, Temp & Color Display for Tap, RO & Bottled Water $8.99
$899
current price $8.99Portable 4-in-1 Digital TDS Water Tester Meter with EC, Temp & Color Display for Tap, RO & Bottled Water
Digital Water Purifier TDS Tester, 4-in-1 Water Quality Meter with EC & Temperature Measurement, Backlit LCD Display, Auto Shut-Off, Water Purity Tester for Drinking Water, RO Systems, Aquariums $19.99
$1999
current price $19.99Digital Water Purifier TDS Tester, 4-in-1 Water Quality Meter with EC & Temperature Measurement, Backlit LCD Display, Auto Shut-Off, Water Purity Tester for Drinking Water, RO Systems, Aquariums
4 in 1 Digital Water Tester,Portable Water Quality Tester with EC Temp Color Display, Water Tester for Drinking Water Digital Hydroponics,Aquariums,RO Systems,Pool,0-9990 PPM Meter From $12.86
From$1286
4 in 1 Digital Water Tester,Portable Water Quality Tester with EC Temp Color Display, Water Tester for Drinking Water Digital Hydroponics,Aquariums,RO Systems,Pool,0-9990 PPM Meter
Digital Water Tester 4-in-1 TDS/EC/Temperature Meter with Smart Color Alert for Drinking Water, Hydroponics, Aquariums, RO Systems $12.99
$1299
current price $12.99Digital Water Tester 4-in-1 TDS/EC/Temperature Meter with Smart Color Alert for Drinking Water, Hydroponics, Aquariums, RO Systems
Digital Water Tester for Drinking Water, TDS/EC/TemperatureC/F, RO/DI System, Aquariums Etc Meter | 0-9999 ppm $14.99
$1499
current price $14.99Digital Water Tester for Drinking Water, TDS/EC/TemperatureC/F, RO/DI System, Aquariums Etc Meter | 0-9999 ppm
2026 All-New 4-in-1 TDS Meter: Test TDS, EC & Temp (C/F) with 0-9999 ppm Range. Accurate Digital Water Tester for Drinking Water, RO/DI Systems, Aquariums, Hydroponics. $15.27 Was $17.99
Now$1527
current price Now $15.27, Was $17.99$17.99
2026 All-New 4-in-1 TDS Meter: Test TDS, EC & Temp (C/F) with 0-9999 ppm Range. Accurate Digital Water Tester for Drinking Water, RO/DI Systems, Aquariums, Hydroponics.
15 out of 5 Stars. 1 reviews
CSSJKYJ 4 in 1 Digital Water Quality Tester - TDS/EC/TemperatureC/FTDS Meter | 0-9999 ppm | Accurate and Professional for Drinking Water, Hydroponics, Aquariums, RO Systems, Pool $7.11
$711
current price $7.11CSSJKYJ 4 in 1 Digital Water Quality Tester - TDS/EC/TemperatureC/FTDS Meter | 0-9999 ppm | Accurate and Professional for Drinking Water, Hydroponics, Aquariums, RO Systems, Pool
Water Quality Tester,0-9999ppm Meter,LCD Display,Accuracy Testing Water Meter for Drinking Water, Aquariums,RO System,Swinging Pool and More(5PCS) From $15.91
2 options
Available in additional 2 optionsFrom$1591
Water Quality Tester,0-9999ppm Meter,LCD Display,Accuracy Testing Water Meter for Drinking Water, Aquariums,RO System,Swinging Pool and More(5PCS)
ABPETE 4 in 1 Digital Water Quality Tester, 0-9990PPM TDS Meter Digital Water Tester, Professional Testing for Drinking Water, Hydroponics, Aquariums, RO Systems Swimming Pools (1) From $21.88
3 options
Available in additional 3 optionsFrom$2188
ABPETE 4 in 1 Digital Water Quality Tester, 0-9990PPM TDS Meter Digital Water Tester, Professional Testing for Drinking Water, Hydroponics, Aquariums, RO Systems Swimming Pools (1)
4 in 1 Digital Water Quality Tester, TDS/EC/Temperature (C/F) TDS Meter 0-9999 ppm for Drinking Water, Hydroponics, Aquariums, RO Systems, Pool $14.99
$1499
current price $14.994 in 1 Digital Water Quality Tester, TDS/EC/Temperature (C/F) TDS Meter 0-9999 ppm for Drinking Water, Hydroponics, Aquariums, RO Systems, Pool
15 out of 5 Stars. 1 reviews
Digital pH TDS & EC Temp Meter for Water,pH Pen and PPM Tester TDS-EC-Temperature Meter,PH Tester with 0-14.00pH and 0.01 Accuracy,TDS EC PH Meters for Aquarium,Hydroponic,RO System $6.00
$600
current price $6.00Digital pH TDS & EC Temp Meter for Water,pH Pen and PPM Tester TDS-EC-Temperature Meter,PH Tester with 0-14.00pH and 0.01 Accuracy,TDS EC PH Meters for Aquarium,Hydroponic,RO System
Clearance 6In Digital Water Quality Tester for Drinking Water, 4 in 1 Meter with Temperature Monitor, Accurate Hardness Checker for Aquarium Pool Hydroponics Ro System (1Pcs, White) $2.99 Was $5.89
Now$299
current price Now $2.99, Was $5.89$5.89
6In Digital Water Quality Tester for Drinking Water, 4 in 1 Meter with Temperature Monitor, Accurate Hardness Checker for Aquarium Pool Hydroponics Ro System (1Pcs, White)
All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc $11.99 Was $21.98
Now$1199
current price Now $11.99, Was $21.98$21.98
All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
Clearance 2 Pack TDS Digital Water Tester,Electronic Water Testers,Accurate and Reliable TDS EC & Temp(°C,°F) Meter,Water Test Meter for Drinking Water,RO/DI System and Aquariums,Blue(5.51x0.94")(Blue*2) Was $7.69
2 Pack TDS Digital Water Tester,Electronic Water Testers,Accurate and Reliable TDS EC & Temp(°C,°F) Meter,Water Test Meter for Drinking Water,RO/DI System and Aquariums,Blue(5.51x0.94")(Blue*2)
CURUK Water Quality Tester,0-9999ppm Meter,LCD Display,Accuracy Testing Water Meter for Drinking Water, Aquariums,RO System,Swinging Pool and More $8.99
$899
current price $8.99CURUK Water Quality Tester,0-9999ppm Meter,LCD Display,Accuracy Testing Water Meter for Drinking Water, Aquariums,RO System,Swinging Pool and More
TDS Water Tester, 4 in 1 TDS Meter Digital Water Tester, Accurate and Reliable Digital TDS EC & Temp(C,F) Meter, 0-9990PPM Water Quality Tester for Drinking Water RO/DI System Aquarium White 6.1In $15.88
$1588
current price $15.88TDS Water Tester, 4 in 1 TDS Meter Digital Water Tester, Accurate and Reliable Digital TDS EC & Temp(C,F) Meter, 0-9990PPM Water Quality Tester for Drinking Water RO/DI System Aquarium White 6.1In
BANIRO Instant 4-In-1 Tds Meter Digital Water Tester for Drinking Water | Accurate 09990 Ppm Ec&Temp Readings | Ideal for Ro Systems,Aquariums,Pools Built for Professionals,Easy for Anyone $9.23
$923
current price $9.23BANIRO Instant 4-In-1 Tds Meter Digital Water Tester for Drinking Water | Accurate 09990 Ppm Ec&Temp Readings | Ideal for Ro Systems,Aquariums,Pools Built for Professionals,Easy for Anyone
Clearance 4-in-1 TDS Meter Digital Water Tester, Accurate TDS EC & Temperature Tester with Backlit LCD, for Drinking Water, Aquarium, Hydroponics, Pool, RO/DI System Water Quality Testing Was $8.89
4-in-1 TDS Meter Digital Water Tester, Accurate TDS EC & Temperature Tester with Backlit LCD, for Drinking Water, Aquarium, Hydroponics, Pool, RO/DI System Water Quality Testing
Clearance Under $2, 1 Pack Digital Water Tester 4 in 1 TDS Meter, Water Quality Test Pen for Drinking Water, Accurate TDS EC & Temperature Meter for Pools Aquariums & RO Systems 16cm(White)
Clearance Under $2, 1 Pack Digital Water Tester 4 in 1 TDS Meter, Water Quality Test Pen for Drinking Water, Accurate TDS EC & Temperature Meter for Pools Aquariums & RO Systems 16cm(White)
Clearance 2025 All-New 4 in 1 Tds Meter Digital Water Tester, Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9990ppm, Professional Testing for Drinking Water, RO/DI System, Aquariums etc $9.40 Was $12.50
Now$940
current price Now $9.40, Was $12.50$12.50
2025 All-New 4 in 1 Tds Meter Digital Water Tester, Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9990ppm, Professional Testing for Drinking Water, RO/DI System, Aquariums etc
Fasiaou 2 Packs Upgraded 4 in 1 Digital Water Tester for Home and Pool Accurate TDS EC Temperature Meter for Drinking Water RO System Aquarium Swimming Pool Water Quality Testing Tool From $8.94
2 options
Available in additional 2 optionsFrom$894
Fasiaou 2 Packs Upgraded 4 in 1 Digital Water Tester for Home and Pool Accurate TDS EC Temperature Meter for Drinking Water RO System Aquarium Swimming Pool Water Quality Testing Tool
New 4 in 1 Tds Meter Digital Water Teste,Water Tester for Drinking Waters for Tap,Well,Pool,Hydroponics,Aquarium,Ro/Di System,Compact and Portable (White-Leather Case) $5.48
$548
current price $5.48New 4 in 1 Tds Meter Digital Water Teste,Water Tester for Drinking Waters for Tap,Well,Pool,Hydroponics,Aquarium,Ro/Di System,Compact and Portable (White-Leather Case)
4 in 1 TDS Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter,0-9990ppm - Professional Testing for Drinking Water,RO/DI System,Aquariums etc $4.49
$449
current price $4.494 in 1 TDS Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter,0-9990ppm - Professional Testing for Drinking Water,RO/DI System,Aquariums etc
2025 All-New 4 in 1 Tds Meter Digital Water Tester, Water Tester for Drinking Waters for Tap, Well, Pool, Hydroponics, Aquarium, Ro/Di System, Compact and Portable (White)
2025 All-New 4 in 1 Tds Meter Digital Water Tester, Water Tester for Drinking Waters for Tap, Well, Pool, Hydroponics, Aquarium, Ro/Di System, Compact and Portable (White)
TDS Meter, Digital Water Quality Tester with ATC, 0-9990 ppm Measuring Range, Portable Water Tester for Drinking Water, Tap Water, Aquariums, RO/RODI Systems (White) $19.98
$1998
current price $19.98TDS Meter, Digital Water Quality Tester with ATC, 0-9990 ppm Measuring Range, Portable Water Tester for Drinking Water, Tap Water, Aquariums, RO/RODI Systems (White)
HCTSHG All New 4 In 1 Tds Meter Digital Water Tester Accurate and Reliable TDS & Temp(°C °F) Meter 0 0 Testing for Drinking Water RO/DI System Aquariums Etc
HCTSHG All New 4 In 1 Tds Meter Digital Water Tester Accurate and Reliable TDS & Temp(°C °F) Meter 0 0 Testing for Drinking Water RO/DI System Aquariums Etc
Solivara Water Testing Kits For Drinking Water 4 In 1 Tds Meter With Temperature For Tap Well Pool Hydroponics Aquarium Ro Di System (White,6.3in)
Solivara Water Testing Kits For Drinking Water 4 In 1 Tds Meter With Temperature For Tap Well Pool Hydroponics Aquarium Ro Di System (White,6.3in)
Jonard Tools FPM-50A - Optical power meter $300.16
$30016
current price $300.16Jonard Tools FPM-50A - Optical power meter
4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
2 options
Available in additional 2 options4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
4-in-1 TDS Water Tester Digital Meter - Measures TDS EC Temperature, 0-9990PPM, Accurate Tester for Drinking Water RO/DI System Aquarium
4-in-1 TDS Water Tester Digital Meter - Measures TDS EC Temperature, 0-9990PPM, Accurate Tester for Drinking Water RO/DI System Aquarium
Other options to consider(132)
OTDR Active Fiber Optic Reflectometer, Touch Screen VFL OLS OPM Event Map Ethernet Cable Tester In-Line ,Portable Optical Power Meter $1,219.63
$1,21963
current price $1,219.63OTDR Active Fiber Optic Reflectometer, Touch Screen VFL OLS OPM Event Map Ethernet Cable Tester In-Line ,Portable Optical Power Meter
OTDR Multi-function 1550nm Touch Screen Optical Time Domain Reflectometer Optical Fiber Tester, VFL(10mW)/OPM/OLS ,Precision Tool From $755.88
From$75588
OTDR Multi-function 1550nm Touch Screen Optical Time Domain Reflectometer Optical Fiber Tester, VFL(10mW)/OPM/OLS ,Precision Tool
Clearance VKLU Digital TDS Meter Water Quality Tester, 0-9990 PPM Portable PPM Monitor for Drinking Water, RO System & Aquariums, Fast Read Purity Checker Was $4.99
VKLU Digital TDS Meter Water Quality Tester, 0-9990 PPM Portable PPM Monitor for Drinking Water, RO System & Aquariums, Fast Read Purity Checker
YAHHU Digital PH Meters Water Quality Tester Pen 0.01pH High Accuracy 0-60 Celsius 0-14 PH Measurement Range Ideal for Drinking Water Pool Aquarium RO System Hydroponics Brewing and Food Testing $11.62
$1162
current price $11.62YAHHU Digital PH Meters Water Quality Tester Pen 0.01pH High Accuracy 0-60 Celsius 0-14 PH Measurement Range Ideal for Drinking Water Pool Aquarium RO System Hydroponics Brewing and Food Testing
Clearance All New 4 In 1 Tds Meter Digital Water Tester Accurate And Reliable TDS & Temp(°C °F) Meter 0 0 Testing For Drinking Water RO/DI System Aquariums Etc From $7.27
From$727
Clearance All New 4 In 1 Tds Meter Digital Water Tester Accurate And Reliable TDS & Temp(°C °F) Meter 0 0 Testing For Drinking Water RO/DI System Aquariums Etc
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