Loser Micro-Digital Osmometer Type 7i

The Type 7i is a cost effective osmometer designed for measuring the osmotic concentration of aqueous solutions and measures sample volumes of 50 - 100µl

*For smaller sample volumes select the Type 7M/7iM (10 - 50µl)*

Features and benefits

• Illuminated LCD menu with graphic display and touch operation.
• Selectable languages. (German, English, French, Spanish, Portuguese, Swedish, Italian).
• Password protection with user administration for GLP-protocols.
• Variable 2nd and 3rd calibration points.
• Single use plastic tubes.
• Wide input voltage range 100-230V suitable for all countries
• Low power consumption.
• MS-Windows software for data transfer included.
• Bit-rate parity and flow control of the RS232 interface can be configured via the menu.

Operation

• Switch on instrument, wait for ready display (approx - 3 minutes).
• Place 25 µl sample in the sample tube (± 10 %).
• Place the sample tube onto the measuring head.
• Lower the measuring head (The sample tube is dipped into the cooling slot).
• Enter sample number using the touch display or the built in scanner (These entries can also be made after measurement).
• Super-cooling is reached after 1 minute and the needle is dipped into the sample.
• As freezing point is reached, the display shows the measurement value in mOsm/kg and the instrument gives an audible tone.
• The measurement value is stored in the memory.
• Slide measuring head from cooling slot and remove the sample tube.
• Wipe the thermistor with a soft tissue.

Calibration

• The zero point is calibrated with distilled water and a standard point with the NaCl solution of 300 mOsm/kg supplied.
• An additional third point i.e. 900 mOsm solution can be used to calibrate, whereby the linearity is raised by higher concentrations.
• Additionally, it is possible to modify the 2nd and 3rd calibration point to wide limits.

Password protection

• 1-12 digit password set-up.
• Create user levels.
• Admistration rights access.
• Basic level access.
• Password protection can be enabled/disabled.

Extra Accessories:

• Analogue output for X-Y plotter.
• Calibration solution 300 and 900 mOsm/kg.