General laboratory instrumentation

Laboratory thermostatically controlled orbital shaker

Laboratory thermostatically controlled orbital shaker is designed for shaking 20 conic flat-bottomed flasks (150-1000 mL). The shaker ensures circular (orbital) movements of a platform with flasks in horizontal plane with smoothly controlled frequency. Thermostatical control of the working chamber is achieved by means of heated air. The shaker design allows visual monitoring of the flasks shaking. The temperature inside the working chamber is measured by digital thermometer.

Specifications

• Temperature range: room temperature to 60°C with precision ±1°C;
• Load of the platform: up to 3 kg;
• Shaking frequency: 20 to 200 per min;
• Orbit diameter: 32 mm;
• Overall dimensions: 510×600×630 mm;
• Mass: 55 kg
• Electric power supply: 220 V, 50 Hz

Peristaltic pumps of the NSH-015 series

Peristaltic pumps of the NSH-015 series are designed for pumping liquids, including corrosive ones. The pumps of the series NSH-015 offer reverse of the liquid flow.

Discharge capacity

• 30 L/h with flexible pipe 4 1.5;
• 67 L/h with flexible pipe 6 1.5;
• 120 L/h with flexible pipe 8 1.5.

Freeze-drier Iney 6

Freeze-drier Iney 6 is designed for freeze-drying of water-containing prefreezed products. Drying rate: more than 60 g/h. The drying occurs on a tray or vials (maximal load 400 vials). The drying is achieved due to sublimation of ice water, which is pumped out by a vacuum pump and then condenced on a cold condensor. In the standard mode, the freeze-drier has two working chambers for drying on a tray or vials. The tray is made of stainless steel. The temperature of the condensor and pressure in the working chambers are monitored by digit indicators placed on the front control panel of the instrument. The freeze-drier Iney-6 possesses a mode of accelerated elimination of the freezed ice.

Specifications

• Transient period of the working conditions: no more then 1 h;
• Condensor capacity: 6 kg of ice;
• Condensor temperature -50°C±5°C;
• Pressure without samples: no more then 6.66 Pa;
• Drying rate: not less then 60 g/h;
• Overall dimensions: 705×545×1505 mm;
• Mass: 200 kg;
• Power: 1500 W;
• Continuous working time: not less then 30 h.

Computer (virtual) pH/ion meter cpX-2.1

cpX-2.1 is the latest development in the field of pH/pX-metry, which provides a low cost multifunctional alternative to the classical steady-state laboratory pH-meters/ionometers. The instrument is optimized for measurements of kinetic changes in pH/pX. The ability of kinetic measurements of voltage changes allows its use with chromatographic detectors instead of expensive systems for registration of chromatographis data.

The computer pH/ion meter cpX-2.1 is a laboratory instrument for precise steady state and kinetic measurements of pH and free ion concentrations (activities) in water solutions under control of a computer program (measuring/reference electrodes are not included). The instrument enables correction of the results for temperature induced changes of the pX scale. The temperature is monitored by a miniature temperature probe. The instrument is intended also for steady-state and kinetic measurements of voltage and temperature. This feature allows its use for measurements of signals from chromatographic detectors. The instrument combined with a notebook can be used under field conditions.

Due to the multipoint calibration of the probe the instrument can be used with various probes possessing strongly non-linear characteristics. Storage of the calibration curves for the electrodes/probes used allows their replacement without recalibration, which ensures comfort work in the case of use of several electrodes/probes.

The instrument provides handy graphical presentation of experimental data and routine treatment of the data: comparison of the curves, their saving and deletion, etc.

Any commercial combined pH-electrode with BNC-connector can be used with the instrument. The use of electrodes with connectors of other type requires use of corresponding adapters.

Application field

The pH/ion meter cpX-2.1 provides extremely convenient precise measurements of pH, pCa and etc., voltage and temperature, and other parameters in the case of use of corresponding probes, both in steady-state and kinetic modes. Intended for laboratory and field studies in chemistry, biochemistry, biophysics, microbiology, and so on.

Advantages of the cpX-2.1

• The instrument can be used both under laboratory and field conditions.
• Intended for both steady-state and kinetic measurements of pX, voltage and temperature.
• The instrument provides several modes of temperature correction of pX values.
• It can be used for measurements of signals from chromatographic detectors, thereby replacing expensive systems for registration of chromatographic data.
• Multipoint calibration of electrode/probe with unlimited number of points is possible.Information about standard solutions for each type of measurements (pH, pCa, etc.) is stored separately.
• Calibration curves for various electrodes/probes used are stored separately, thereby enabling electrodes/probes replacement without their recalibration.
• The data are displayed on a computer monitor as a function of time and can be saved into file with all information, necessary for data identification.
• Curve manager ensures handy data handling.
• The cover of the miniature temperature probe is made of chemically inert Teflon.

Layout of the instrument

The cpX-2.1 pH/ion meter includes

• A handheld electronic module with a miniature temperature probe and a BNC-connector for combined electrode, equipped with a USB port. In the case of the use of electrodes pair (measuring/reference electrodes) or electrodes with connectors of other type the respective adapters are required.
• A computer software, which performs all measurement related operations.

The electronic module contains amplifiers for matching of the measured voltages with an analog-to-digital converter, and a mirocontroller which controls the data collection and transmission. The instrument performs the conversion of an analog signal to a digital one, its moderate smoothening and transmission to the USB port. The processing of the signal, including averaging, temperature correction and comparison with calibration curve is performed within the computer program.

The computer software ensures

• multipoint calibration of electrode/probe;
• storage of calibration curves for various electrodes/probes with all necessary information (calibration date, user's name, etc.);
• measurements both in steady-state and kinetic mode with a preset time resolution;
• correction of the results for temperature changes;
• saving into a text file with a experiment description;
• handy graphical representation and handling of experimental data.

All these functions ensure incredible flexibility and power of the measurement process.

Specifications

• Operation modes: steady-state and kinetic measurements of pX, voltage and temperature
• Temperature correction of the pX scale: automatic or manual, can be disabled
• Calibration: multipoint calibration of electrodes and temperature probe
• Computer requirements: a free USB port, Windows 2000/2003/2008/XP/Vista/7
• Maximal frequency of data collection: 20 Hz
• Connector type: BNC
• Input resistance: 1014 Ω
• Maximal input voltage: ±15 V
• Measuring range of input voltage / accuracy / resolution: ±2 V / ±1 mV / 0.08 mV
• Measuring range of pH (60 mV per pH unit, isoelectric point pH 7) / resolution: -26 to 40 / 0.0013 pH units
• Measuring range of temperature / accuracy / resolution: 0°C to 95°C / ±0.5°C / 0.02°C
• Size of temperature probe: D=3 mm, H=10 mm
• Material of temperature probe cover: Teflon
• Response time of temperature probe: 5 sec.
• Power supply: from USB port
• Size: 90×50×24 mm
• Mass: 120 g

Delivery set

• pH/ion meter with plug
• Temperature probe
• USB cable
• Installation CD disc
• User’s quick guide

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