Centrifugation Tubes

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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 Cells W600

Tintometer

Cells made of optical glass or Borosilicate glass 3.3, 21 mm x 40 mm, for instument Models Fs, PFXi/PFX195, 880, 950 and 995. (Note: PFXi/PFX-195 max. path length 50 mm).

W600/OG/xx for unheated samples (up to 40 °C)
W600/B/xx for heated samples (up to max. 100 °C)

Further versions available on request....

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 Cells W680

Tintometer

Cells made of optical glass 17 mm x 75 mm, for Comparator 2000+ and Comparator 3000 using unheated samples (up to 40 °C).

Further versions available on request....

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 Comparators 2000/3000 series

AQUALYTIC

Two-Field and Three-Field Comparator View and nummerical results. The EComparator series offers the progress from Visual (subjective) to Electronic (objective) results.
With the EComparator series, viewers can view the colour difference with on-screen colour and on-screen numerical display. Touch screen technology makes the EComparator easily programmable with instinctive menus on screen. Users can set language, date and time, view preferences and create projects with individual tolerance settings "within tolerance" (green), "outside tolerance" (red) and "on border of tolerance" (amber) to provide the user with immediate information on the sample....

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 Color Standards Platinum-Cobalt (Hazen)

Reagecon

These color standards can be used to calibrate, control, qualify or validate color measurement instruments to determine the color number. These standards can be described as Platinum-Cobalt, Pt-Co, Hazen or APHA color. All descriptions are interchangeable.

  • Covers requirements of ASTM Method D 1209
  • In 1 l HDPE bottle
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 Pt-Co Reference Standards

Tintometer

Bottles of 500 ml, certified according to QS System, ISO 9001. Shelf life 12 months. Other versions available on request....

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 Reagent tablets for Comparators CHECKIT® / 2000+

Tintometer

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 Reagent tablets for Nessleriser 2150 / 2250

Tintometer

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 Cuvette Tests, LCK

Hach
GHS07 GHS08

Ready-to-use cuvette tests with pre-dosed reagents for photometric evaluation.

  • Exact concentrations of the ISO formulation
  • High measuring accuracy
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 Lovibond® Nessleriser Systems, Pt-Co/Hazen/APHA Scale

Tintometer

Lovibond ® Comparator 2000+ is a quality instrument for the visual analysis of colour intensity in analysis samples using Lovibond colour discs. The integral cell attachment enables cells with a depth of 40mm to be accepted. The Lovibond ® Nessleriser system provides greater depths by using corresponding accessory Nessler tubes. This enables the determination of concentrations below the detection limit of the Lovibond...

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 Lovibond® Comparator 2000+

Tintometer

Lovibond ® Comparator 2000+ is a quality instrument for the visual analysis of colour intensity in analysis samples using Lovibond colour discs. The integral cell attachment enables cells with a depth of 40mm to be accepted. The Lovibond ® Nessleriser system provides greater depths by using corresponding accessory Nessler tubes. This enables the determination of concentrations below the detection limit of the Lovibond...

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 Lovibond® Comparator 3000

Tintometer

Visual comparators for colour grading. A series of 3-field instruments designed for visual colour grading by direct comparison between the sample and coloured glass standards. The sample and two adjacent glasses on the colour scale are viewed simultaneously, making it easier to achieve the optimum colour match. The tungsten halogen light source is colour corrected to CIE Standard Illuminant C (B for the EBC Comparator 3000) and guarantees constant lighting conditions for colour grading. Versions of the Comparator 3000 are available for the following scales, each supplied with the appropriate range of colour standards and sample containers:...

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 Reflectance spectrophotometer TR 520

AQUALYTIC

Ergonomic and flexible reflection spectrophotometers for measuring samples in different industries including food, medicine, coatings and plastics. The on-board camera-based locator and the black and white calibration plates ensure precise measurements and results at all times.

  • CMOS sensor (256 picture elements, double array)
  • Intuitive 3.5 inch TFT color LCD (capacitive), symbol-based
  • Free PC-based OnShade software which allows graphs and statistical process control
  • Operation languages: English, French, German, Spanish, Portuguese, Chinese
...

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 Reflectance spectrophotometer TR 500

AQUALYTIC

Ergonomic and flexible reflection spectrophotometers for measuring samples in different industries including food, medicine, coatings and plastics. The on-board camera-based locator and the black and white calibration plates ensure precise measurements and results at all times.

  • CMOS sensor (256 picture elements, double array)
  • Intuitive 3.5 inch TFT color LCD (capacitive), symbol-based
  • Free PC-based OnShade software which allows graphs and statistical process control
  • Operation languages: English, French, German, Spanish, Portuguese, Chinese
...

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 Nessler cylinders, Soda-lime glass

Marienfeld

With spout and white circular mark. Calibrated "In"....

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4/14A EBC Colour Scale Disc, 2-6

Tintometer

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6250101

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4/14B EBC Colour Scale Disc, 6-10

Tintometer

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6250102

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4/14C EBC Colour Scale Disc, 10-18

Tintometer

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6250103

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4/14D EBC colour scale disc,19-27

Lovibond

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6290532

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AF228/T Test tube 10.65 mm Ø for AF 228, AF 229

Tintometer

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6085808

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AF509/C ASTM Color (limited range 1-5) of Diesel Fuels (ASTM D 1500)

Tintometer

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6304384

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Aggregates Disc ASTM C 40 /C40M -20

Lovibond

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4681900

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Bulb for Daylight 2000 Lighting Unit

Tintometer

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6223116

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Calibration certificate for new colour discs

Lovibond

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4672171

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Calibration Filter Set 3 D,E,F

Tintometer

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7661849

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Color standard ASTM®

Millipore

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ASTM03701

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Centrifuge tubes as a customised solution

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!