Osmometer

Freezing Point Osmometer

This Osmometer is an automatic freezing point depression measurement device for the concentration analysis of aqueous solutions. It uses a new method for freezing agitation: ultrasound induced freezing provides high precision measurement results.

The freezing point of aqueous solutions is measured. The depression of freezing point compared to pure water is direct related to the osmotic concentration. Pure water freezes at 0°C, an aqueous solution with an osmolality of 1 osmol / kg water at -–1.858°C. 1 Mol of a substance dissolved in 1 kg of water gives a solution with an osmotic concentration of 1 osmol / kg water only if it is an ideal solution and if the substance does not dissociate.

The zero point is calibrated with distilled water and a standard point with the NaCl-solution of 300 mosm / kg supplied. Occasional checks shows that the calibration is very stable. An additional 900 mosm-solution can be used to calibrate, whereby the linearity is raised by higher concentrations.

Automatic osmometer Osmopro 3250

The freezing initiation is gently triggered by a short ultrasound pulse-not by the stirring of cooling needle. The repeatability is greatly enhanced because ultrasonic induced crystallization inhibits splashing of the sample and avoids sample carryover.

It uses a stainless steel thermistor. It's more durable than the glass thermistors, easy to be cleaned after every measurement using non-woven tissue.

Technical specifications

• sample volume: 30 to 100 ul
• measurement time: 90 s per sample
• measurement range: 0-3000 mOsm/kg
• resolution: 1 mOsm/kg H2O
• repeatability: <±0.5% (400 to 3000 mOsm) or ±2 (0 to 400mOsm)
• linearity: dev. < 1 %
• langages: english, german, french
• interfaces: 1 printer parallel port, one mini USB port
• voltage: 115 or 230 V AC
• power supply: 180 VA
• ambiant temperature: 5 to 33 °C
• dimensions: 35 x 36 x 38 cm (measuring head up)
• net weight: 11.5 kg, CE mark

Micro-volume osmometer OsmolabOne

The freezing initiation is gently triggered by a short ultrasound pulse-not by the stirring of cooling needle. The repeatability is greatly enhanced because ultrasonic induced crystallization inhibits splashing of the sample and avoids sample carryover.

It uses a stainless steel thermistor. It's more durable than the glass thermistors, easy to be cleaned after every measurement using non-woven tissue.

Technical specifications

• sample volume: 25 ul
• measurement time: 90 s per sample
• measurement range: 0-2000 mOsm/kg
• resolution: 1 mOsm/kg H2O
• repeatability: <±0.5% (400 to 3000 mOsm) or ±2 (0 to 400mOsm)
• linearity: dev. < 1 %
• langages: english, german, french
• interfaces: 1 printer parallel port, one mini USB port
• voltage: 115 or 230 V AC
• power supply: 180 VA
• ambiant temperature: 5 to 33 °C
• dimensions: 35 x 36 x 38 cm (measuring head up)
• net weight: 11.5 kg, CE mark

Osmometer OsmoTouch 20

it is is an automatic osmometer with a 20-place carrusel-based autosampler for the rapid determination of the osmolality in biological fluids, pharmaceutical samples and other solutions by means of the cryoscopic point variation.

Features

• Sample capacity: up to 20 samples
• Full colour 7'' touchscreen display
• Bath with Peltier cells controlled by software
• Operating room temperature: +5°C to 36°C
• Automatic calibration
• Lash and agitation width controlled by software
• Sample volume: from 50 to 200 uL
• Test duration: about 2-3 minutes/sample (from 0 to 900 mOsm/Kg)
• Warm up time: about 5 minutes
• Analytical range: from 0 to 3 000 mOsm/Kg
• Resolution: 1 mOsm/Kg
• Repeatability and reproducibility: ±2.5 mOsm/Kg (from 0 to 600 mOsm/Kg) or ±0.5% of the value (from 600 to 3,000 mOsm/Kg)
• USB port for data downloading to a pen drive
• 2 x RS232 ports for connecting the provided thermal printer and an optional PC
• An additional RS232 port can be added for connecting an optional barcode reader (to be requested when ordering)
• Power absorption: max. 150 W
• Size: 285x485x360 mm (wxdxh, head down)
• Net weight: 17.4 Kg

Osmometer OsmoTouch 40

it is is an automatic osmometer with a 40-place carrusel-based autosampler for the rapid determination of the osmolality in biological fluids, pharmaceutical samples and other solutions by means of the cryoscopic point variation.

Features

• Sample capacity: up to 40 samples
• Full colour 7'' touchscreen display
• Bath with Peltier cells controlled by software
• Operating room temperature: +5°C to 36°C
• Automatic calibration
• Lash and agitation width controlled by software
• Sample volume: from 50 to 200 uL
• Test duration: about 2-3 minutes/sample (from 0 to 900 mOsm/Kg)
• Warm up time: about 5 minutes
• Analytical range: from 0 to 3 000 mOsm/Kg
• Resolution: 1 mOsm/Kg
• Repeatability and reproducibility: ±2.5 mOsm/Kg (from 0 to 600 mOsm/Kg) or ±0.5% of the value (from 600 to 3,000 mOsm/Kg)
• USB port for data downloading to a pen drive
• 2 x RS232 ports for connecting the provided thermal printer and an optional PC
• An additional RS232 port can be added for connecting an optional barcode reader (to be requested when ordering)
• Power absorption: max. 150 W
• Size: 330x610x360 mm (wxdxh, head down)
• Net weight: 20.5 Kg