The Water Activity mainly reflects the amount of free water in the state of food balance, the stability of food and the possibility of microbial reproduction, and the chemical, enzyme and physical changes that can cause the change of food quality. It is often used to measure the dryness enduring ability of the microorganisms. By measuring the water activity of food and selecting reasonable packing and storage methods, the use of preservatives can be reduced and the shelf life of food, grain and fruits and vegetables can be judged. This is a real portable water activity meter, with a weight of only 100 grams, lighter than a mobile phone, and a precision of 0.02 aw, easy to measure water activity anytime and anywhere. Easy reading, water activity and temperature of the samples displayed together. Use USB data output to connect with PC. Fast testing, measures the water activity in 5 minutes. Sensors and readings are integrated. Put the samples in sample boxes and meters are placed on them until the data are stable. Please note: This meter is calibrated by factory, users do not need to calibrate again, just input samples and test which is very simple. If you want to verify the accurate, you can make the standard salt solution by the following steps: 1. 100g pure NaCl, add into 200g hot distilled water, stir it. Then wait till to room temperature. 2. Keep the solution into a brown bottle for one week in room temperature. 3. In room temperature 25°C (77°F), make sure the meter, solution, room temperature all same temperature. The solution AW value should be 0.73~0.77 The Water Activity, mainly reflects the amount of free water in the state of food balance, the stability of food and the possibility of microbial reproduction, and the chemical, enzyme and physical changes that can cause the change of food quality. It is often used to measure the dryness enduring ability of the microorganisms. By measuring the water activity of food and selecting reasonable packing and storage methods, the use of preservatives can be reduced and the shelf life of food, grain and fruits and vegetables can be judged.

Specifications

Display: 6 bit backlight LCD digital display (3 bit humidity aw,3 bit temperature display)

Range: 0aw-1.0aw

Resolution: 0.01aw

Accuracy: ±0.02aw

Sensor: Non conductive humidity sensor

Sampling Time: 5 Minutes

Operation Conditions: Temperature 0ºC~50ºC; Humidity <95%RH

Power Supply: 2x1.5V AAA Alkaline Battery

Dimensions: 135mmx70mmx44mm

Weight(Not Including Batteries): 100g
Standard Accessories:

1 x Main Unit

3 x Sample Plate

1 x Carrying Case (B04)

1 x Manual