Horticulture Source » Discount Specialty Farm, Greenhouse, Garden & Hydroponics Supply Store » Meters, Timers & Instruments » pH, EC, PPM & TDS Testers   Mobile   Secure |  My Account | Cart Contents | Checkout )
You have JavaScript disabled or are using a browser which does not support it. Please turn on JavaScript or consider upgrading or switching your web browser, e.g. FireFox or Opera.
Happy Thanksgiving! We are taking orders but please note some shippers & warehouses are closed in observance of Thanksgiving.
Categories
* Lamps / Tubes / Bulbs ++ (544)
* Lighting Systems ++ (1143)
* Nutrients & Supplements (4155)
* Composters & Compost Tea Brewing (36)
* Organic Gardening (462)
* Leaf Shines & Washes (127)
* Pest & Disease Control (521)
* Cloning & Propagation (371)
* Grow Systems ++ (648)
! Meters, Timers & Instruments ++ (693)
 » Calibration, Storage & Cleaning Solutions, pH Up & Down (215)
 » Instruments, Thermometers, Hygrometers & Light Meters (28)
 » ! pH, EC, PPM & TDS Testers (346)
 » Timers & Lighting Controllers (104)
* Pots / Containers (883)
* Pumps, Irrigation & Watering Supplies ++ (1428)
* Grow Media (540)
* Plant Seeds (10)
* Environmental Control ++ (1935)
* Greenhouses (84)
* Grow Rooms / Tents (128)
* Reflective / B&W Films (120)
* Garden Accessories ++ (753)
* Hand Tools ++ (507)
* Gardening Books & DVDs (56)
* Growing Apparel (3)
Manufacturers more
What's New? more
Ideal H2O Professional Series Reverse Osmosis System - 2000 GPD
738400
Ideal H2O Professional Series Reverse Osmosis System - 2000 GPD
$4,950.69
Quick Find
Quick Find
Use keywords to find the product you are looking for.
Advanced Search

Information
Who else is online?
There are 31 guests online.
Frequent search words
Ads

What do we have here?
Meters, Timers & Instruments: pH, EC, PPM & TDS Testers: pH, EC, PPM & TDS Meters, Monitors, Testers, Pens & Test Kits for Water & Soil

Show: 
What do we have here?
Displaying 121 to 140 (of 346 products) Result Pages: [<< Prev]   1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  [Next >>] 
 Sort by Popularity   Manufacturer   Product(s)   Model+   Price   Buy Now 
 Hanna Checker Phosphate LR Reagents (300pcs)   Hanna Instruments   Hanna Checker Phosphate LR Reagents (300pcs) 
FOR Hanna Checker - Phosphate Easier to use and more accurate than chemical test kits Ascorbic acid method ±0.04 ppm ±4% of reading accuracy 
Large, easy to read digits
 Auto shut off Dedicated to a single parameter Designed to work with HANNA’s reagents Uses 10 mL glass cuvettes Small size, big convenience W... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716935   $64.64 
 Hanna Checker Phosphorous HC Ultra Low Range   Hanna Instruments   Hanna Checker Phosphorous HC Ultra Low Range 
Hanna Checker - Phosphorus ULR Easier to use and more accurate than chemical test kits Ascorbic acid method ±0.04 ppm ±4% of reading accuracy
 Large, easy to read digits 
Auto shut off Dedicated to a single parameter Designed to work with HANNA’s reagents Uses 10 mL glass cuvettes Small size, big convenience ... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716940   $48.30 
 Hanna Checker Phosphorous ULR Reagents (25/CS)   Hanna Instruments   Hanna Checker Phosphorous ULR Reagents (25/CS) 
FOR Hanna Checker - Phosphorus ULR Easier to use and more accurate than chemical test kits Ascorbic acid method ±0.04 ppm ±4% of reading accuracy
 Large, easy to read digits 
Auto shut off Dedicated to a single parameter Designed to work with HANNA’s reagents Uses 10 mL glass cuvettes Small size, big convenience ... This item is sold individually. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716945   $7.97 
 Hanna Checker Marine Alkalinity HC   Hanna Instruments   Hanna Checker Marine Alkalinity HC 
Hanna Checker - Alkalinity Easier to use and more accurate than chemical test kits Colorimetric method Accuracy ±5 ppm ±5% of reading 1 ppm (mg/L) resolution Large, easy to read digits Auto shut off Dedicated to a single parameter Designed to work with HANNA’s liquid reagents Uses 10 mL glass cuvettes Small size, big c... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716950   $48.30 
 Hanna Checker Alkalinity Reagents (25pcs)   Hanna Instruments   Hanna Checker Alkalinity Reagents (25pcs) 
FOR Hanna Checker - Alkalinity Easier to use and more accurate than chemical test kits Colorimetric method Accuracy ±5 ppm ±5% of reading 1 ppm (mg/L) resolution Large, easy to read digits Auto shut off Dedicated to a single parameter Designed to work with HANNA’s liquid reagents Uses 10 mL glass cuvettes Small size, b... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716955   $7.97 
 Hanna Checker Glass Cuvet for Checker Series (4pcs)   Hanna Instruments   Hanna Checker Glass Cuvet for Checker Series (4pcs) 
Hanna Checker AccessoriesGlass Cuvette (4 pcs) The glass cuvette is the most sensitive part for taking accurate measurements with photometers. It is important that the cuvette is always clean and without scratches. These cuvettes were engineered to fit the HANNA Checker HC line.... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716965   $18.60 
 Hanna Checker Cuvet Caps for Checker Series (4pcs)   Hanna Instruments   Hanna Checker Cuvet Caps for Checker Series (4pcs) 
Hanna Checker AccessoriesCuvette Caps (4 pcs) These caps were made to fit the cuvette.... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716970   $7.97 
 Hanna Checker Cuvet Cleaning Soultion   Hanna Instruments   Hanna Checker Cuvet Cleaning Soultion 
FOR Hanna Checker - Phosphorus ULR Easier to use and more accurate than chemical test kits Ascorbic acid method ±0.04 ppm ±4% of reading accuracy
 Large, easy to read digits 
Auto shut off Dedicated to a single parameter Designed to work with HANNA’s reagents Uses 10 mL glass cuvettes Small size, big convenience ... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716975   $21.25 
 Hanna Checker Cuvet Cleaning Soultion   Hanna Instruments   Hanna Checker Cuvet Cleaning Soultion 
Hanna Checker AccessoriesCuvette Cleaning Solution, 230 ml This solution is used to clean dirty cuvettes. Cleaning your cuvette is important because if the cuvette is dirty, less light will reach the sample and it can make your reading off.... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 716975   $21.25 
 Grow More pH Up 30% Quart (12/Cs)      Grow More pH Up 30% Quart (12/Cs) 
Grow More pH Up 30%Grow More pH Up 30% Quart (12/Cs) (721860)Convenient ready to use liquids, concentrated, fast acting, high purity food grade ingredients. Use pH Up to raise pH of nutrient solution with potassium hydroxide. Not registered in the state of OR at this time. Manufacturer's Product Information ... This item is sold individually. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 721860   $6.09 
 Grow More pH Up 30% Gallon (4/Cs)      Grow More pH Up 30% Gallon (4/Cs) 
Grow More pH Up 30%Grow More pH Up 30% Gallon (4/Cs) (721865)Convenient ready to use liquids, concentrated, fast acting, high purity food grade ingredients. Use pH Up to raise pH of nutrient solution with potassium hydroxide. Not registered in Washington or Oregon at this time. Manufacturer's Product Information ... This item is sold individually. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 721865   $16.24 
 Grow More pH Down 30% Quart (12/Cs)      Grow More pH Down 30% Quart (12/Cs) 
Grow More pH Down 30%Grow More pH Down 30% Quart (12/Cs) (721870)Convenient ready to use liquids, concentrated, fast acting, high purity food grade ingredients. Use pH Down to lower pH of nutrient solution with phosphoric acid. Not registered in the state of OR at this time. Manufacturer's Product Information ... This item is sold individually. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 721870   $6.09 
 Grow More pH Down 30% Gallon (4/Cs)      Grow More pH Down 30% Gallon (4/Cs) 
Grow More pH Down 30%Grow More pH Down 30% Gallon (4/Cs) (721875)Convenient ready to use liquids, concentrated, fast acting, high purity food grade ingredients. Use pH Down to lower pH of nutrient solution with phosphoric acid. Not registered in the state of OR at this time. Manufacturer's Product Information ... This item is sold individually. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 721875   $16.24 
 pH CONTROL KIT (12/CASE)   General Hydroponics   pH CONTROL KIT (12/CASE) 
General Hydroponics™ pH Control Kit PH CONTROL KIT (12/CASE) Contains: 8 oz. pH UP, 8 oz. pH DOWN, 1 oz. indicator & vial Manufacturer's Product Information 2007 MSRP Each $15.95 Case Weight19.35 LB Case Dimensions17.25 x 10.5 x 7.5 IN Case Quantity12 NOTE: CANNOT SHI... This item is sold individually. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 722080   $11.42 
 pH TEST KIT 1OZ (24/CASE)   General Hydroponics   pH TEST KIT 1OZ (24/CASE) 
General Hydroponics™ pH Test Kit PH TEST KIT 1OZ (24/CASE) 1 oz. test kit with test vial offers wide spectrum testing (pH 4.0 to 8.5). This concentrated solution requires only 5 drops per test. Manufacturer's Product Information 2007 MSRP Each $6.95 Case Weight3.07 LB Case Dimensions7.25 x... This item is sold individually. — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 722145   $5.01 
 PH ALERT   Seachem   PH ALERT 
Seachem pH Alert™ 6 MONTH MONITOR pH Alert™ is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly to alert you shifts to in pH levels between 5.8 and 8.6. Freshwater Only.... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA Free Shipping when ordering $50 or more of qualifying items....more info.
 729002   $6.59 
 AMMONIA ALERT   Seachem   AMMONIA ALERT 
Seachem Ammonia Alert™ 1 YEAR MONITOR Ammonia Alert™ is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or procedures are needed. The device detects less than 0.05 mg/L (ppm) free ammonia and alerts you to the #1 ki... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA Free Shipping when ordering $50 or more of qualifying items....more info.
 729004   $6.28 
 REEF STATUS CALCIUM TEST   Seachem   REEF STATUS CALCIUM TEST 
Seachem Reef Status™ Calcium 50 TESTS This kit measures all types of calcium, including gluconate calcium. The method is based on specific titration with a unique indicator. Measures in increments of 5 mg/L. Each kit runs 150 tests.... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA Free Shipping when ordering $50 or more of qualifying items....more info.
 729016   $27.83 
 Bond Moisture Meter      Bond Moisture Meter 
Bond Moisture Meter Measures moisture content of soil. Lets you know when to water. No batteries needed. For indoor or outdoor use.... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 740860   $5.01 
 Bond 3 Way Soil Meter      Bond 3 Way Soil Meter 
Bond 3 Way Soil Meter Measures moisture content of soil. Lets you know to water. Helps you determine if plant is getting adequate light. Helps you control pH level in soil. No batteries need. For indoor or outdoor use.... — Ships from Ontario, CA, Samoa, CA, Livermore, CA, Vancouver, WA, Denver, CO, Detriot, MI, Nashville, TN, York, PA, and/or Pompano Beach, FL USA...more info.
 740865   $7.25 
Displaying 121 to 140 (of 346 products) Result Pages: [<< Prev]   1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  [Next >>] 
Ads
Social Bookmark
Shopping Cart more
0 items - Add an item to the cart to get a quote!
 Estimate Shipping Costs by adding a product to the cart.
Shop By Price
Reviews more
BOTANICARE® MICROGARDEN™ COMPLETE AEROPONICS HYDROGARDENING GROWING SYSTEM - 31" X 13.75" X 17"
Love this system this works great i still use it in my 9 sq ..
5 of 5 Stars!
BizRate Customer Certified (GOLD) Site - HorticultureSource.com -Specialty Gardening Supply Reviews at Bizrate


PriceGrabber User Ratings for Horticulture Source
Specials more
INVENTORY BLOWOUT SALE
MANY ITEMS FAR BELOW COST - while quantities last

Roots Organics Uprising Grow 3lbs Dry Blend (3/CS)
Roots Organics Uprising Grow 3lbs Dry Blend (3/CS)
$13.28
$11.88
Most Viewed in pH, EC, PPM & TDS Meters, Monitors, Testers, Pens & Test Kits for Water & Soil
CW 24-7 NUTRIENT MONITOR PPM/pH/TEMPERATURE
CW 24-7 NUTRIENT MONITOR PPM/pH/TEMPERATURE
RAPITEST 4 WAY ANALYZER FERTILIZER/LIGHT/MOISTURE/pH MODEL 1880
RAPITEST 4 WAY ANALYZER FERTILIZER/LIGHT/MOISTURE/pH MODEL 1880
BLUELAB COMBINATION METER MEASURES pH, NUTRIENTS AND TEMPERATURE
BLUELAB COMBINATION METER MEASURES pH, NUTRIENTS AND TEMPERATURE
pH CONTROL KIT (12/CASE)
pH CONTROL KIT (12/CASE)
CW SOIL, pH AND MOISTURE MONITOR
CW SOIL, pH AND MOISTURE MONITOR
MI MW802 (was SM802) SMART pH/EC/TDS COMBINATION METER (1/CASE)
MI MW802 (was SM802) SMART pH/EC/TDS COMBINATION METER (1/CASE)
RAPITEST SOIL pH METER
RAPITEST SOIL pH METER
RAPITEST SOIL TEST pH NPK
RAPITEST SOIL TEST pH NPK
Control Wizard Accurate pH 8
Control Wizard Accurate pH 8
ORIGINAL TRUNCHEON METER MEASURE EC AND PPM
ORIGINAL TRUNCHEON METER MEASURE EC AND PPM
HANNA WATERPROOF PH/EC/TDS/TEMP (HI98129)
HANNA WATERPROOF PH/EC/TDS/TEMP (HI98129)
BLUELAB GUARDIAN MONITOR
BLUELAB GUARDIAN MONITOR
PH600-AQ PH METER 10/CS
PH600-AQ PH METER 10/CS
FH TRI-METER CONTINUOUS MONITOR #202 PPM/pH/TEMPERATURE
FH TRI-METER CONTINUOUS MONITOR #202 PPM/pH/TEMPERATURE
REPLACEMENT PROBE FOR BLUELAB COMBINATION METER & pH MONITORS
REPLACEMENT PROBE FOR BLUELAB COMBINATION METER & pH MONITORS
pHydrion Litmus Paper. (ph Test Strip)
pHydrion Litmus Paper. (ph Test Strip)
Hanna Tri-Meter - pH/TDS/Temp. (HI981504/7)
Hanna Tri-Meter - pH/TDS/Temp. (HI981504/7)
KILL A WATT METER
KILL A WATT METER
FH TRI-METER CONTINUOUS MONITOR #204 EC/pH/TEMPERATURE
FH TRI-METER CONTINUOUS MONITOR #204 EC/pH/TEMPERATURE
24-7 Nutrient Monitor.
24-7 Nutrient Monitor.
Bestsellers
01.RAPITEST SOIL TEST pH NPK
02.Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter
03.BlueLab Combo Meter
04.pH Controller Sampling Kit
05.Bluelab Guardian Monitor Power Supply
06.Probe pH Electrode
07.Rapitest Digital 3-Way Analyzer
08.Bluelab Grower's Toolbox-Limited Edition
09.Bluelab Guardian Monitor Connect
10.Bluelab pH Pen
11.Checker pH Tester with Replaceable Electrode
12.Nutra-Dip continuous Tri meter (pH, PPM (NaCl) & Temperature)
13.pH Tester w/1 Point Manual Calibration
14.Rapitest Electronic 4-Way Analyzer
15.Bluelab Soil pH Pen
Languages
English Deutsch Español
Currencies
Feeds
RSS 2.0
Google Sitemap
ROR Sitemap
ROR Feed
Ads
Ads
Rotating 480

Customer Service

 

Shopping Help

 

My Account

 

Tools & Resources

BizRate Customer Certified (GOLD) Site - HorticultureSource.com -Specialty Gardening Supply Reviews at Bizrate PriceGrabber User Ratings for Horticulture Source ShopWiki Certified Store
Official PayPal Seal
Merchant Services
HorticultureSource.com is an Upfront Merchant on TheFind. Click for info. Secured by RapidSSL
Secured by RapidSSL
100% Satisfaction Guaranteed  Proud Hydro for Hunger Participant
 Proud Participant
APO/FPO addresses are no problem.
International orders are always welcome!
UPSFedExUSPS OnTrac CalOver EstesR+LSouthEasternSAIA
Copyright © 2005 — 2014 Usisu, Inc.: Conditions of Use VISAMasterCardAmerican ExpressDiscoverDiners ClubJBCPayPal Money Order