Bench Lab Dissolved Oxygen Meter

We are offering sts-3400 precision dissolved oxygen meter are used to measure amount of gaseous oxygen dissolved in a liquids.
feature:
two-point push-button calibration (zero and 100%)
automatic temperature compensation
salinity and barometric pressure compensation
multi-measurement units (mglppm; kpammhg, etc.)
automatic operation message prompts
expanded memory stores and recalls up to 99 data sets
built-in real-time clock stamps for stored data
usb communication interface
model
sts-3400
dissolved oxygen range
0.00~20.00mgl or ppm
resolution
0.01mgl
dissolved oxygen accuracy
±0.3mgl
% saturation of oxygen
0.0~200.0%
accuracy
±5.00%
temperature range
0.0~50.0oc, 32~122of
temperature accuracy
±1oc, ±1.8of
temperature compensation
0.0~40.0oc, automatic
salinity correction
0~35gl
barometric pressure correction
450~850mmhg, 60.0~112.5kpa
calibration points
1 or 2 points, 100% in air or 0% in solution
memory
99 data sets
output
usb communication interface
power requirements
dc9v, using ac adapters, 220vac, 50hz
dimensions
210(l)mm×188(w)mm×60(h)mm