Centrifuge tubes are specially designed to be placed in centrifuges to separate liquids, cells or other particles based on their density. During centrifugation, the contents are broken down into their components through rapid rotation around the fixed axis. The centrifugal force pushes the heavier components of the substance downwards, while the lighter ones remain at the top. In this way, solids can be reliably separated from liquids as well as substances of different densities.
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LLG-Vacuum measuring instrument DVR 2 pro
LLG
Versatile vacuum gauge for vacuum measurement between atmospheric pressure and 1 mbar.
With integral, alumina ceramic, pressure transducer providing excellent corrosion resistance and long-term stability.
Mains independent due to battery operation
Large display
High measuring accuracy
Optimal menu navigation
With support rod
All parts in contact with media are made of chemically resistant materials
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Versatile vacuum gauge for vacuum measurement between atmospheric pressure and 1 mbar. With integral, alumina ceramic, pressure transducer providing excellent corrosion resistance and long-term stability.
Mains independent due to battery operation
Large display
High measuring accuracy
Optimal menu navigation
With support rod
All parts in contact with media are made of chemically resistant materials
Scope of supply: Vacuum measuring instrument with connections for small flange D16, compression fitting and tubing nozzle for tubing with 6 to 10 mm ID.
Specifications
Measuring range:
1080 to 1mbar (hPa), 810 to 1 Torr
Measurement principle:
Capacitive; gas type-independent absolute pressure measurement
Measuring accuracy:
< 1mbar (0,75 Torr) +/- 1 digit
Power supply/battery:
9V battery
Dimensions (W x D x H):
115 x 115 x 66mm
Weight:
0.40kg
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Digital Anemometer
ATAGO
For the measurement of wind speed (in m/s, km/h, mph, knots, ft/min), maximum and average wind speed, indication of temperature (in °C or °F). LCD backlight display. Auto/Manual power off. Useful for the functional check of fume hoods and safety cabinets....
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For the measurement of wind speed (in m/s, km/h, mph, knots, ft/min), maximum and average wind speed, indication of temperature (in °C or °F). LCD backlight display. Auto/Manual power off. Useful for the functional check of fume hoods and safety cabinets.
Wind speed range:
0.2 ... 30 m/s
Resolution:
0.1 m/s
Accuracy:
± 5 %
Temperature range:
-10 ... 45 °C (-14 ... 113 °F)
Power supply:
3V CR2032
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Accessories for hand-held meters Serie P700
Dostmann
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CO2 Meter, Air CO2ntrol 3000
Dostmann
Large display
Measuring range: 0 to 3000 ppm
Incl. Power supply for 230 VAC
24-hour data logger
Adjustable Alarm
°C/°F-selectable
Relay output for ventilation control
Applications: Ideal for monitoring the environment (CO...
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Large display
Measuring range: 0 to 3000 ppm
Incl. Power supply for 230 VAC
24-hour data logger
Adjustable Alarm
°C/°F-selectable
Relay output for ventilation control
Applications: Ideal for monitoring the environment (CO2 concentration) in public buildings, such as universities, schools, for e.g. Hospitals, Education, Office, Production Plants, Public Facilities.
Specifications
CO2 range:
0 ... 3000ppm
Resolution:
1ppm (0 up to 1000ppm); 5ppm (1000 up to 2000ppm); 10ppm (<2000ppm)
Accuracy:
50ppm or 5%, larger value applies
Temperaturerange:
0 ... +50°C
Resolution:
0,1°C
Accuracy:
±1% or 1°C, larger value applies
Display:
7 segment LCD(twin-lined)
Housing:
Plastic (ABS)
Supply requirements:
230 VAC adapter or 4 x AA Batteries
Dimensions:
165 x 80 x 23mm
Weight:
600g (incl. packaging)
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Differential pressure meter testo 510
Testo
Very handy, small and easy to operate pressure meter for differential pressure and flow velocity measurement values. The backlit display allows the measurement values to be easily read out, even in unfavourable light conditions. The testo 510, in combinationwith a Pitot tube, measures air flow velocity. For accurate measurement values, the air density can be compensated....
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Very handy, small and easy to operate pressure meter for differential pressure and flow velocity measurement values. The backlit display allows the measurement values to be easily read out, even in unfavourable light conditions. The testo 510, in combinationwith a Pitot tube, measures air flow velocity. For accurate measurement values, the air density can be compensated.
Flow velocity measurement possible with Pitot tube
Scope of supply: Meter incl. tubing set (diam. 4 mm and 5 mm) with adapter, protective cap, calibration protocol, belt holder, batteries
Specifications
Measuring range:
0 to 100 hPa
Accuracy:
±0.03 hPa (0 to 0.30 hPa) ±0.05 hPa (0.31 to 1.00 hPa) ±(0.1 hPa + 1.5 % v. Mw.) (1.01 to 100 hPa)
Resolution
0.01 hPa
Positive pressure:
500 mbar
Max. static pressure:
1.5 bar
Operating temperature:
0 to +50 °C
Storage temperature:
-40 to +70 °C
Power supply: Battery life:
2 Microcells AAA 50 h (average, without display illumination)
Measuring rate:
0.5 s
Dimensions (L x D x H):
119 x 46 x 25 mm
Weight:
90 g
IP code:
IP 40
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Dräger-Tubes ®
Dräger Safety
The Dräger-Tubes
® measuring system is the safe method for measuring pollutants in the soil, water and air. More than 500 substances can be measured in varying concentrations. The long-established principle of Dräger-Tubes
® is still the same. A defined volume of gas/air must be pumped through the sampling tube. This can be achieved by using the Accuro...
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The Dräger-Tubes® measuring system is the safe method for measuring pollutants in the soil, water and air. More than 500 substances can be measured in varying concentrations. The long-established principle of Dräger-Tubes® is still the same. A defined volume of gas/air must be pumped through the sampling tube. This can be achieved by using the Accuro® gas pump. On contact with the substance under test the reagent system contained in the tube reacts and displays a colour. The strength of the concentration of the substance is shown by the length of the colour band displayed and can be read directly from the scale. The Dräger-Tubes® sampling system provides accuracy, efficiency, quick and easy handling. Over 250 tubes are available on request for all substances and measuring fields. Further sampling devices, diffusion tubes for long-term measurements as well as sampling systems with activated carbon tubes, ORSA collector and TDS thermodesorption tubes are also available.
Easy to use: remove protection cap, press measuring button and insert measuring electrodes in object.
Scale for construction materials and wood
Automatic instrument test
With clip
Applications:
Used to measure the moisture level in sawn timber and construction materials. Suitable for field work....
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Easy to use: remove protection cap, press measuring button and insert measuring electrodes in object.
Scale for construction materials and wood
Automatic instrument test
With clip
Applications: Used to measure the moisture level in sawn timber and construction materials. Suitable for field work.
Specifications
Measuring principle:
electrical resistance
Measuring range wood:
6 to 42%
Accuracy wood:
<30% ±2%; >30% ±4%
Measuring construction materials:
0.2 to 2.0%
Accuracy construction materials:
<1.4% ±0.1%; >1.4% ±0.2%
Temperature range:
0 to 40°C (32 to 104°F)
Power supply.
4 x coin cell (LR44)
Housing:
impact-resistant plastic
Dimensions:
80 x 40 x 20mm
Weight:
80g (incl. packaging)
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Precision handheld instruments P700 series
Dostmann
For temperature, moisture and airflow.
For highly accurate temperature measurements with USB PC online interface. (Optional: Windows SmartGraph software for graphical and tabular documentation, etc). Integral probe calibration for sensor tolerance compensation. Min.- Max.- Hold- and AVG- functions. The large LCD shows two measurements synchronously, even temperature differences can be displayed (P705, P755, P755-Log, P770)....
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For temperature, moisture and airflow. For highly accurate temperature measurements with USB PC online interface. (Optional: Windows SmartGraph software for graphical and tabular documentation, etc). Integral probe calibration for sensor tolerance compensation. Min.- Max.- Hold- and AVG- functions. The large LCD shows two measurements synchronously, even temperature differences can be displayed (P705, P755, P755-Log, P770).
Specifications General (all models): USB interface, Max-Min memory, Hold function, true average calculation over a freely selectable period, Auto-off function, measured quantities can be freely assigned to instrument channels, comprehensive calibration options (selectable 1-point, 2-point or 3-point calibration), large display with bar graph for simultaneous display of 2 measured values P700/P705: 1/2 measurement channels (Pt100 4-wire probe, thermocouples type J, K, L, N, T, R, S), measurement ranges and accuracies: Pt100:-200 to +850°C ( ±0.1 °C -100 to +200°C, otherwise ±0.1% of measurement value) thermocouples, DIN types (-200 to +1760°C) P710/P715: 1/2 measurement channels (Thermocouples type K, J, L, N, T), measurement ranges and accuracies: -200 to +1370°C (±0.2 °C from 0 to +200 °C, ±0.5 °C to 1000 °C, otherwise ± 1.0 °C of measurement value) Thermocouples acc. to EN 60584 P750/P755/P755-Log: 1/2 measurement channels (Pt100 4-wire probe, thermocouples type J, K, L, N, T, R, S, moisture, flow), measurement ranges and accuracies: Pt100: -200 to +850°C (±0.03°C -50 to +200°C, ±0.05°C -200 to +200°C, otherwise ±0.05% of measurement value), thermocouples, DIN type (types J, K, L, N, T 0 to 200 °C, ±0.3°C, +200 to +1000°C ±1.0 °C, otherwise ±1.5°C; type R, S ±1.0 °C +0.1% of measurement value) humidity 0 to 100% R.H. ( ±1.5%R.H.), flow 0 to 40 m/s (±0.5% of measurement value +1.0% of final value) P770: 2 measurement channels (Pt100, thermocouples type J, K, L, N, T, R, S, moisture, flow), measurement ranges and accuracies: Pt100: -200 to +850°C ( ±0.1 °C -100 to +200°C, otherwise ±0.1% of measurement value) thermocouples, DIN types, humidity 0 to 100%R.H. ( ±1.5%R.H.), flow 0 to 40 m/s (±0.5% of measurement value) Dimensions (L x W x D)/ weight: 200 x 85 x 40mm / 300g
P700-P755 for Ex-use Zone 1 and Zone 2 according to ATEX approval II 2 G Ex ib IIB T4 Gb available on request.
Hellmann type. Short form. Precipitation can be collected directly into the measuring cylinder....
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Hellmann type. Short form. Precipitation can be collected directly into the measuring cylinder.
Measuring cylinder:
250cm³ = 25mm precipitation
Divisions:
1mm precipitation
Collecting area:
100cm²
Dimensions (Dia. x H):
120 x 255mm
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Room climate monitor RM 100
ebro
For reliable control and evaluation of indoor air quality. Simultaneous measurement and display of temperature, CO
2 concentration and humidity. The CO
2 concentration in the air is additionally indicated by three LEDs as good, medium or bad.
Alarming when limit is exceeded
Large, illuminated display
Factory calibration certificate
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For reliable control and evaluation of indoor air quality. Simultaneous measurement and display of temperature, CO2 concentration and humidity. The CO2 concentration in the air is additionally indicated by three LEDs as good, medium or bad.
In order to meet the variety of different requirements, we offer centrifuges in a wide range of formats, sizes and materials.
Application and quality
Centrifuge tubes are used wherever the components need to be split - for example, for blood samples to separate the plasma, to isolate proteins or DNA, to collect cell cultures
or microorganisms from cultures, for the concentration of particles from environmental samples... The range of applications is diverse.
The high demands placed on these analyses also mean that no compromises can be made when selecting the centrifuge tubes used.
At Th. Geyer, we therefore focus on the highest quality and maximum safety - even at maximum speeds and high centrifugal pressure.
The material
You can choose between plastic, glass and stainless steel for the raw materials used. While stainless steel usually plays a subordinate role, plastics such as polypropylene (PP), polyamide (PA), polyethylene (PE) or polycarbonate (PC) are the standard in laboratories and research environments.
Depending on the type of plastic, centrifuge tubes can withstand very low to very high temperatures.
They are stable against chemicals and can be translucent or opaque, depending on requirements.
Centrifuge tubes made of glass impress with their basic resistance to chemicals, acids, bases and organic solvents.
The glass variants score points with their reusability and above-average durability. If required, glass allows a high degree of transparency and offers relatively easy handling
If the material is subjected to high speeds during centrifugation, plastic is usually the better choice.
Th. Geyer offers centrifuge tubes in both variants.
The sizes
Th. Geyer meets the specific requirements for the dimensions and capacity of centrifuge tubes with a large selection of different sizes.
These can be up to 500 ml, while sizes such as 50 mL and 15 mL are available for smaller filling volumes. In the micro range, centrifuge tubes are between 1.5 mL and 0.2 mL, which are mainly used in laboratories.
Of course, we offer you a wide selection of all common formats.
The lid
During centrifugation, the lid of the centrifuge tube prevents liquid from leaking out. Traditionally, screw, push-in or plug-in lids are used for this purpose, which are easy to close.
Micro centrifuge tubes are usually fitted with a snap-on cap. For very large variants, threaded lids ensure leakage protection. You will find both models with and without lids in our range.
Depending on your choice, you can always order stoppers and the like separately.
The base
The different base variants also meet the respective requirements. The conical base with its slightly tapered shape allows for selective material collection, making separation and removal much easier
Sample recovery is particularly high. Alternatively, you can also choose between self-standing centrifuge tubes with a flat base or a rounded base.
Benefit from our portfolio of centrifuge tubes
Are you looking for centrifuge tubes for demanding applications? Th. Geyer offers a wide range of the highest quality. Functional, easy to handle and with an attractive price-performance ratio.
Please feel free to send us your enquiry or contact us directly in person. We look forward to hearing from you!
