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Active Air 2-Way Meter (12/case) Active Air 2-Way Meter (12/case) (eco-2373)2-Way Moisture/pH Meter
Active Air™ Environment Meters
Gardeners can conveniently test their moisture, and pH levels with the handy ActiveAir 2-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist), and pH readings between pH 0 (acidic) and pH 10 (basic) are represented. The durable, easy-to-read tester is suita... This item is sold individually. — Ships from Seattle, Washington USA...more.
Rapitest Digital Moisture Meter Rapitest Digital Moisture Meter
Rapitest Digital Moisture Meter tests for moisture at the roots - where
it matters - you no longer risk over watering a healthy plant just
because the soil near the surface is dry or under-watering because it
appears moist. Ideal for houseplants, window boxes, patio tubs and
hanging baskets.
Instant digital read-out.
Checks soi... ...more.
pH Control Kit pH Control Kit (eco-5518)pH Control Kit
Contains Ph Up (add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level), Ph Down (uses food grade Phosphoric acid to lower the pH to the proper level), and Ph Test Indicator (fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liqui... — Ships from Seattle, Washington USA...more.
Active Air 3-Way Meter (12/case) Active Air 3-Way Meter (12/case) (eco-2374)ActiveAir 3 - Way Meter
Active Air™ Environment Meters
Gardeners can conveniently test their moisture, light, and pH levels with the handy ActiveAir 3-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist), light readings range from 0 (low light) to 2000 (very strong light), and pH readings between pH 0 (acidic)... This item is sold individually. — Ships from Seattle, Washington USA...more.
Rapitest Digital Soil PH Meter Rapitest Digital Soil PH Meter
Plants need the correct pH level which controls how well plants utilize
the nutrients available in your soil. All plants have a pH preference,
so it is important to know the pH level of your soil. You can choose
plants with the same pH preferences, avoid those that will not do well
in your soil, or know how to go about supplying their special gro... ...more.
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....more.
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... ...more.
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....more.
BATTERIES, FOR PH / TDS METERS, 10 BATTERIES PER CARD, SOLD IN CASES OF 20 ONLY! Replacement Battery 10/card (BAT-LR44)MILWAUKEE WATERPROOF PENS The Milwaukee Waterproof Pen series of EC, TDS (PPM) and pH pens allow you to monitor your nutrient solution for best plant growth. They all feature replaceable electrodes for long life. The batteries will last 1500 hours of use. The pH pen will measure from 0 to 14.0 pH. The EC and TDS pens have automatic temperature... Note: Calibration Buffer Solutions are available separately. — Ships from Perris, California; Cranston, Rhode Island; Portland, Oregon; Aurora, Colorado; Dallas, Texas USA...more.
MULTITEST NITRITE/NITRATE Seachem Multi•Test™ Nitrite/Nitrate
75 TESTS
This kit measures nitrite down to 0.2 mg/L and nitrate down to 2 mg/L in marine or freshwater.... — FREE shipping when ordering $75 or more of qualifying items....more.
MULTITEST AMMONIA Seachem Multi•Test™ Ammonia
75 TESTS
This kit measures total (NH3 and NH4+) and free ammonia (NH3 only) down to 0.05 mg/L and is virtually interference free in marine and fresh water. Free ammonia is the toxic form of ammonia (vs. ionized Ammonia NH4+ which is non-toxic) and thus it is much more important to keep an eye on the level of free ammonia in your system.... — FREE shipping when ordering $75 or more of qualifying items....more.
MULTITEST PHOSPHATE Seachem Multi•Test™ Phosphate
75 TESTS
This kit measures inorganic phosphate down to 0.05 mg/L, producing a unique easy to read yellow-green-blue color range in marine and freshwater.... — FREE shipping when ordering $75 or more of qualifying items....more.
MULTITEST IODIDE Seachem Multi•Test™ Iodine/Idodide
75 TESTS
This kit measures iodine or iodide to less than 0.005 mg/L. Seachem stands alone in offering this important test to the reef aquarian.... — FREE shipping when ordering $75 or more of qualifying items....more.
MULTITEST PH & ALKALINITY Seachem Multi•Test™ Marine pH & Alkalinity
75 TESTS
MultiTest: Marine ph & Alkalinity™ features a unique dye that has a pronounced color change between 8.0 and 8.3, making it the easiest kit on the market to read in that critical range. Alkalinity may be read from the same sample in 0.5 meq/L increments... Note: Calibration Buffer Solutions are available separately. — FREE shipping when ordering $75 or more of qualifying items....more.
RAPITEST SOIL TEST pH NPK Rapitest Soil Test Kit [model 1601]
SOIL TEST PH,N,P,K
Kit includes: 4 color comparators, 40 test capsules, 10 each for pH, N, P and K, complete instructions for adjusting soil pH, fertilization guidelines and pH preferences list for over 450 plants for the home, yard and garden. Plants need food (nutrients)for healthy growth. Nitrogen, Phosphorus and Potash (N, P and K for s... ...more.
Meters, Timers & Instruments 
