Product description：QT-AT 502 Chlorophyll Meter can measure chlorophyll content ofplants. Chlorophyll content is an important index of plantgrowth. This instrument is powerful, portable, and easy to use.It does no harm to plants. Users just need to put a leaf tissuelarger than 3mm in the aperture, and then press the button to getthe chlorophyll content reading.

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 acomputer and data can be downloaded to a computer via USBinterface.

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 USBinterface. The software can run successfully under Windows2000/XP/Vista system.

ORIGIN: CHINA