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Bluelab Replacement pH Probe - for Guardian Monitor & Combo & pH Meter
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HM PH-80 Digital PH & Temperature Meter - Waterproof | Tester | Pen | Hydroponics
On Sale 21% OFF RRP $239.95
Horiba LAQUAtwin Compact pH Meter - pH22 | 3 Point Calibration | Delivery Only
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Bluelab Connect USB Stick - Data Log & View Nutrient Measurements Wirelessly

Bluelab Connect Stick USB

Now $189.95

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BlueLab Digital pH & Temperature Pen + Digital EC PPM Pen + Probe Care Kit
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BlueLab Digital pH & Temperature Pen - Portable | Reliable | Easy to Calibrate

BlueLab Digital pH & Temperature Pen

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Bluelab Dosetronic Peridoser Kit - PH EC Temp Controller | Auto Feed System
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Bluelab Guardian Monitor - Measures EC PPM TDS CF PH Temp | AC Powered

Bluelab Guardian Monitor

Now $370.45

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Bluelab Guardian Monitor Connect - EC PPM TDS CF PH Temperature | Data Stream

Bluelab Gardian Monitor Connect

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Bluelab pH Controller - Hands-free Monitor | Auto pH Adjustment

Bluelab pH Controller

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Bluelab PH Controller Connect - Hands-free Monitor | Auto pH Adjustments

Bluelab PH Controller Connect

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Bluelab Probe Care Kit - pH

Bluelab Probe Care Kit - pH

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Bluelab Replacement Soil pH Probe - for Bluelab pH Meter & Combo & Soil Meter

Bluelab Replacement Soil pH Probe

Now $94.01

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Bluelab Soil pH Meter Handheld - Great for Soil or Coco
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Bluelab Soil pH Pen - Great for Soil or Coco | Temp Compensation | Digital Calibration

Bluelab Soil pH Pen

Now $218.45

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Horiba LAQUAtwin Compact pH Meter - pH11 | 2 Point Calibration | Delivery Only
On Sale 19% OFF RRP $279.95
Horiba LAQUAtwin Compact pH Meter - pH33 | 5 Point Calibration | Delivery Only
On Sale 29% OFF RRP $19.95
Hy-Gen pH Test Kit - (Testing solution for pH range 4.5 - 7.5)
On Sale 24% OFF RRP $149.95
Ionix Instruments pH & Temperature Tester - 1 Year Warranty | IP67 Waterproof
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Milwaukee - pH55 | pH/Temperature Meter | with Replaceable Electrode
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Milwaukee PH Meter + EC Meter MW710 - Carry Case Included | MW100 + MW302
On Sale 23% OFF RRP $299.95 Out Of Stock!
Bluelab Hand Held pH Meter - Battery Powered | Reliable | Portable
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Flairform pH Test Kit - Sufficient for over 800 Tests

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Established in 1987, HM Digital, Inc. (formerly known as Heemang Electronics) is an original equipment manufacturer (OEM) that has been recognized worldwide for providing the best values in water testing instrumentation, especially the increasingly popular TDS meter. Our products are co-designed between our Los Angeles office and our ISO-9001-certified factory in Seoul, Korea, producing high quality water testing and monitoring equipment for all types of water treatment and purification systems, including reverse osmosis (RO), that are sold in over 50 countries through ...


When you can test something easily and accurately, you can manage it. Specifically, you can get the most from water-based plant growing systems. And that’s Bluelab’s world. Our product range of pH meters and pH controllers and nutrient meters and controllers, measure parameters such as pH, conductivity and temperature. They’re used worldwide in applications from home-based hydroponics through to the most demanding of commercial food-growing environments. We’re a young company, so we’re innovators by nature. Crucially, we’re people focuss ...


OAKTON offers scientific instruments for research, industrial, and educational uses. These instruments are famous for their unique combination of innovative design and exceptional value, and represent "best buys" in their categories. ...


Author: Canna  

Now, let’s get down to it by understanding and accepting a couple of key points and rules of thumb. 1. Start To begin, herbaceous root systems require near 100% humidity , ideally, at all times, otherwise the root tips die back. The root tip is the very small end of the root that is divided into three zones. The length is variable and depends on many considerations such as plant variety, temperature, past water levels and much more. The root tip is responsible for absorbing t ...


Author: Bluelab  

Although there are ideal EC values for each plant type, this does not mean that a range of plants, all technically requiring different strength nutrients, cannot be grown in a home situation together. The grower simply lists the range of EC values and picks an average value. For most home systems this value is between 1.2EC and 2.0EC depending upon the requirements of the predominant crop types being grown. The pH values given here are broad, note that the average is 6.0 - 6.5pH for hydroponic applications. Below is a list of crops with the ideal EC and pH values th ...


Author: Dutch Master  

Hard water results primarily from excess calcium, magnesium, sodium and other minerals dissolved in the ground water. Too much of any of these can greatly alter the mineral nutrient balance in the root zone and nutrient reservoirs. Sodium, for instance, competes with Potassium and you may end up with Potassium deficiency symptoms like brown leaf tips and less than optimal growth & yields. Many other deficiency symptoms can occur when too much of one mineral is "out competing" others. Most hydroponic nutrients are formulated based on "pure water" and this ...


The HORIBA Group of worldwide companies provides an extensive array of instruments and systems for applications ranging from automotive R&D, process and environmental monitoring, in-vitro medical diagnostics, semiconductor manufacturing and metrology, to a broad range of scientific R&D and QC measurements. Proven quality and trustworthy performance have established widespread confidence in the HORIBA Brand. ...