Viscometers
Instruments used to measure the viscosity of a fluid; available in a variety of configurations.
Viscometers or viscosimeters are important to many industries, including the adhesive, biotech, chemical, food, paint, petroleum, and pharmaceutical industries.
What Is a Viscometer?
Viscometers are instruments used to measure viscosity, the internal friction of the layers of a liquid in motion. An example is the slower flow of syrup from a container — syrup is more viscous than water.
How Is Viscosity Measured?
In general, viscometers move an object through a stationary fluid or move the fluid past a stationary object to measure the friction between the fluid and the object or surface. Viscometers measure using a single flow condition.
What Are the Different Types of Viscometers?
- Glass capillary viscometers or Ostwald or Ubbelohde viscometers consist of a U-shaped glass tube held vertically in a controlled temperature bath. Liquid is drawn by suction into the upper bulb and allowed to flow down into the lower bulb. You calculate viscosity by measuring the amount of time it takes for the liquid to move between two marks.
- Falling ball viscometers measure the time it takes for a sphere of a known size and density to descend through a stationary liquid. This can be done electronically for opaque fluids.
- Rotational viscometers use the concept of torque to measure the effort required to turn a disk or bob in a fluid. Rotating bobs are more common, rotating cups reduce the likelihood of vortex formation, and "cone and plate" viscometers create a constant shear rate at any speed.
Bellco Glass, Inc. MicroCarrier Impeller Assembly ,500mL
Micro-Carrier ImpellerAssemblyPromote optimal growth of suspension andmicro-carrier cultures. Impeller height adjuststhrough compression fitting in cap. Indentedbottom up to 1L prevents accumulation ofmicro-carrier beads under impeller. Impeller assembly for micro-carrier spinner flasks. Consist of magnet holder, silicone plug, magnet, and ptfe paddle. MADE IN THE USA. Impeller size: 500ml Paddle dimensions: 1" x 3"
Bellco Glass, Inc. 50mL Flask Tray, 51x51,49 Pos
Pre-mounted stainless steel clamps for Bellco Erlenmeyer flask. Flask Tray fits on top of the standard tray platform. Includes clamps.. MADE IN THE USA Flask positions: 49 Dimensions: 51x51cm Size: 50ml
Bellco Glass, Inc. 2-P Stainless Steel Sparger Assembly , 36L STD Over Head Drive Vessels - Air Stone
2-port air stone stainless steel sparger assembly is designed for the sparging of gases into the vessel liquid media. This design allows access through the side arms with a screw on cap assembly. Fully autoclavable. MADE IN THE USA.
Bellco Glass, Inc. Over Head Drive PTFE Impeller Assembly , 6L
Ideal use for over head drive vessels. Description: 6L OHD Impeller Assembly Consists of Paddle, Plug, Paddle Holder, andDrive Shaft. MADE IN THE USAPaddle [A523-214]: PTFE material, 171.5mm wide x 76.2mm tall x 1.6mm thickPlug [A542-49]: PTFE, 9.5mm OD x 19.1mm long (approx.)Paddle Holder [A542-50]: PTFE, 279.4mm long x 19.1mm ODDrive Shaft [A542-46]: 316L SST, 190.5mm long x 6.4mm OD (approx.)
Bellco Glass, Inc. 1P Digital Stir Complete, 230V
Bell-ennium Magnetic Stirrers are designed for both cell cultures in spinner flasks as well as for general laboratory procedures requiring the use of magnetic stirring equipment. Bell-ennium stirrers offer the laboratory researcher a wide range of capabilities and the latest innovations in stirring technology. Bell-ennium stirrers feature brushless maintenance free DC motors with drive assemblies designed for quiet operation. Stainless steel covers are stamped to show the vessel positions for accurate placement and optimum performance. The Bell-ennium single position low profile chassis measure 10 x 11 x 3 3/8” and are designed to fit side-by-side in Bellco incubators. Units are powered by standard 24V in-line power supplies and are CE compliant.. MADE IN THE USA
Bellco Glass, Inc. Optima Holding Tray,10.5 SQ. For Plastic Bag
Holding tray for plastic bags. Manufactured from clear high quality acrylic for rockers and shakers. Temperatures up to 50 degrees Celsius. The optima holding tray is designed to fit many types of laboratory shakers and rocking platforms. Place holding tray on top of a platform that has a rubber mat. MADE IN THE USA
Sigma Aldrich Fine Chemicals Biosciences Proteomics Dynamic Range S
The Proteomics Dynamic Range Standard Set is produced from a mixture of 48 individual human source or human sequence recombinant proteins each of which has been selected to limit heterogeneous post-translational modifications (PTMs). The protein standard is formulated from 6 mixtures of 8 proteins to present a dynamic range of 5 orders of magnitude ranging from 50 pmoles to 500 amoles. Each protein has been quantitated by amino acid analysis (AAA) prior to formulation.
Cole-Parmer Cannon 9721-R62 Viscometer, Size 1C; 6 to 30 Centistokes
Ubbelohde Viscometers. Use to determine kinematic viscosities of transparent Newtonian liquids. Require an 11-mL sample volume. Precision is ±0.2%.
Sigma Aldrich Fine Chemicals Biosciences Cannon-fenske viscometer t1EA
Obtain kinematic viscosities using tubes designed for ASTM Method D445 and D2515. Viscosities can be measured with a precision of /-0.2% quickly and easily.Requires approximately 7 mL of sample. Certificate of Calibration supplied.
Sigma Aldrich Fine Chemicals Biosciences Ostwald viscometer tube ou1EA
for the determination of relative viscosities of liquids. Adjusted for outflow time of 80 to 100s with water at 20C.
Ace Glass, Inc. Cannon-Fenske viscometer, calibrated, size 450, 500-2500centistokes
Cannon-Fenske viscometer, calibrated, size 450, 500-2500centistokes