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Product description:

QT-AT 502 Chlorophyll Meter can measure chlorophyll content of plants. Chlorophyll content is an important index of plant growth. This instrument is powerful, portable, and easy to use. It does no harm to plants. Users just need to put a leaf tissue larger than 3mm in the aperture, and then press the button to get the chlorophyll content reading.

QT-AT 502 Portable Chlorophyll Meter

Features:

· The measurements can be designated to up to 500 plant names;

· With a storage of 5000 data;

· Be able to delete recent or all of the data

· Designated plant names can be uploaded to the instrument from a computer and data can be downloaded to a computer via USB interface.

Specifications

Measurement System
 Optical Density Difference between wavelength of 650 nm and 940 nm
 
Measurement range
 0 to 99.9 SPAD
 
Precision
 Standard Deviation less than 1
 
Button
 4 buttons, one is for measurement
 
Display
 2 lines x 16 characters
 
Data Storage
 5000 data, including data with designated plant names; The name is up to 32 characters (only only 28 characters shown);
 
Power Source
 2 AA 1.5V batteries
 
Battery life
 5,000-30,000 measurements per set of 2 batteries, depending on the usage and battery type;
 
Measurement time
 Less than 1 second;
 
Dimension
 164 x 78 x 49mm (W×H×D);
 
Weight
 225g (without batteries);
 
Interface
 USB
 
Automatic shutdown
 1 minute without operations (10 minutes with USB connection)
 

Software:

The software can upload designated plant names to the instrument, also the data can be downloaded to the computer via USB interface. The software can run successfully under Windows 2000/XP/Vista system.

Made in China.

http://www.channeleco.com/en/Item/Show.asp?m=1&d=1196

~http://www.channeleco.com/en/