Zest Engineering
Bawana, New Delhi, Delhi
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Analytical Instruments

Prominent & Leading Manufacturer from New Delhi, we offer water activity meter. and digital conductivity meters.
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Water Activity Meter.
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Water Activity Meter.

Approx. Price: Rs 1.87 Lakh / PieceGet Latest Price
Product Brochure
Product Details:
Minimum Order Quantity1 Piece
Display Size4.3 Inch
Measuring Range0.03 to 1.00 A
Weight2.8 Kg
Accuracy Range+/- 0.005a
Accuracy of temp control+/-0.1 deg C
Power Supply90 to 264 VAC
Volume Measuring Chamber21.1 ml,40 x 12 mm
Water Activity Meter is defined as the current volume and availability of free water in a sample and should not be directly compared with the water content (g water/ g substance). The water activity is given as the aW value and ranges between 0 (absolute dryness) and 1 (condensed humidity). Only this component can possibly form the ideal medium for microbiological growth on the surface which influences the microbiological stability. Free water in products is jointly responsible for the growth of undesirable organisms such as bacteria or fungi, which produce toxins or other harmful substances. For the determination of the a W-value the relative humidity in the surrounding air over the sample is measured. It is proportional to the a W-value. A meaningful a W-measurement can only be done if the sample shows a constant temperature during the measurement. The relative equilibrium humidity of a product, which is ascertained through its partial pressure of water vapor on the surface, depends on the chemical compound, temperature, water content, storage environment, absolute pressure and packing. Lab Master-aW is a high-quality laboratory device for the high precision determination of the aw-value of food, pharmaceutics, cosmetic etc.. Features: - High accuracy and repeatability - Temperature controlled measuring chamber - Increased measurement speed - Measurement cell with saved calibration data - Intuitive and simple menu navigation - Modular expandability to multi channel system Chemical/Biochemical effects of high/low aw value are: Microbiological stability (growth) Chemical stability (see table) Content of proteins and vitamins Colour, taste and nutritional value Stability of the compound and durability Storage and packing Sorption isotherm The relation b/w water content and water activity is showing the sorption isotherm of a product. Change in Temp will vary the aw-value at each humidity point.

Additional Information:
  • Item Code: 110435
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  • Digital Conductivity Meters
  • Digital Conductivity Meters
  • Digital Conductivity Meters
Digital Conductivity Meters
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Digital Conductivity Meters

Approx. Price: Rs 12,500 / UnitGet Latest Price
Product Details:
Minimum Order Quantity1 Unit
Pole TypeSingle Pole
Current1 A
Size/Dimension96 x 96 mm
Display1999 Counts
Cell Constant0.1 and 1
Set Points2 High and Low
TransmissionOutput 0 - 2.0 V DC
Temperature CompensationAutomatic Using External PT-100 Sensor..
Digital orp pH pool test monitor meterZEST pH meter use latest generation of microprocessor-based instrument, a high intelligent, multi-function, high measurement performance, environmental adaptability and other characteristics. It is a highly intelligent online continuous monitoring instrument, integrate with the sensor and the second meter. Can be equipped with three composite or two composite electrodes to meet a variety of sites. Can be widely used for continuous monitoring of PH value for thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food and water and other solution.Product DescriptionWhat's the Features of Digital orp pH pool test monitor meter?

1. High accuracy :1%FS and resolution is 0.01ph,0.1C and 0.1mV

2. Multi-parameters display: pH,temperature,current,data,time and working state.

3. Easy operation: english menu and friendly Interface.

4. Tmeperation compensation can be up to 150C.

5.Out 4~20mA,0~10mA ;also can output two current for pH and temperature.

6. Aluminum housing and IP65 protection.

7. Save data funtion: it can save data in every 5 minutes and keep one month.

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