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STEP Systems
STEP Systems News
July 2019

Quality of irrigation water 
Why measure conductivity?

Irrigation water quality
The quality of the irrigation water may affect both crop yields and soil physical conditions, even if all other conditions and cultural practices are favourable. In addition, different crops have different irrigation water requirements. Fertilizer chemicals, which leach to water sources, may also affect the water.

Salinity as a problem 
The main problem related to irrigation water quality is the water salinity. Water salinity refers to the total amount of salts dissolved in the water. High level of salts in the irrigation water reduces water availability to the crop (because of osmotic pressure) and causes yield reduction. 

Testing your irrigation water
The most common parameters used for determining the irrigation water quality, in relation with its salinity, are EC and TDS. The electrical conductivity of the water can be determined in a quick and inexpensive way, using portable meters.
ECO EC Pocket Tester
ECO EC Pocket Tester
for semi-professional use
 
The result is displayed as EC in mS or TDS in ppm. Automatic temperature compensation. Replaceable electrode. Battery level indicator, stability indicator, automatic 2-point calibration.
Find out more  
COMBI 5000 EC
COMBI 5000 EC
follow-up model to EC 3000
 
It is supplied with a high-quality electrode with platinum sensors providing very precise measurements from 0 to 200 mS. Easy to use, maintenance-free, waterproof and very robust for field or laboratory application. Automatic temperature compensation.
Find out more  
COMBI 5000 pH+EC
COMBI 5000 pH+EC
conductivity meter and
pH meter in one device

 
The ideal combination for all users of hydroponic growing systems, for consultants and salesman of liquid fertilizers, fertilizer mixers, etc.
Find out more  
Newcomers for some products

The world won't stop changing - and nor will STEP Systems!
❌ EC meter EC 3000 (item-no. 10200) has been replaced by ➡️ COMBI 5000 EC (item.-no. 10290) with immediate effect.


❌ Combination case pH+EC 3000 (item-no. 10600) has been replaced by ➡️ COMBI 5000 pH+EC (item-no. 10690) with immediate effect.
Optimal EC-Values
Optimal EC-Values

This table with target EC-values of commonly used fertilizers helps to make fertigation easier and safer.

Click to download →
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STEP Systems GmbH
Duisburger Str. 44
90451 Nuremberg
Germany
Tel.: +49 911 96 26 05 0
Fax: +49 911 96 26 05 9
e-mail: info@stepsystems.de
www.stepsystems.de
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