50101 SI Analytics Ubbelohde Capillary Viscometer | German Original Capillary No.0a 0.53mm K=0.005 | -40~150℃ Kinematic Viscosity Tube-Labcan Scientific

Product Description

Model 50101 is original German SI Analytics Ubbelohde suspended-level capillary viscometer with Capillary No.0a, Order No.285400029. It features precise 0.53mm capillary inner diameter, factory calibrated viscosity constant K=0.005, effective measuring range 0.8~5 mm²/s, overall length 290mm and standard filling volume 15 to 20 ml. Integrally precision blown from high heat-resistant borosilicate glass with exclusive wide-temperature resistant design, it operates stably from -40℃ to 150℃, compatible with high & low temperature thermostatic baths. The repeatability test tolerance reaches ±0.2%, much better than general industrial standards. It supports manual & automatic recording of flow time under multiple temperatures to generate complete viscosity-temperature curves, intuitively showing fluid viscosity variation with temperature. Classic suspended liquid column design eliminates interference from sample filling volume, serial dilution tests can be carried out directly inside the tube without replacement, greatly improving efficiency for polymer molecular weight testing. Permanently etched clear timing marks on glass wall, smooth inner surface without dead corners, resistant to organic solvents, acid and alkali. It can be cleaned by water washing, ultrasonic cleaning and high-temperature drying to avoid cross-contamination from residual samples.

Product Parameters

Parameter Item	Specification
Model Number	50101
Brand Name	SI Analytics (Germany)
Order Number	285400029
Type	Ubbelohde Suspended Level Capillary Viscometer
Capillary Spec.	No.0a, Inner Diameter 0.53mm
Viscosity Constant K	0.005
Measuring Range	0.8–5 mm²/s
Filling Volume	15…20 ml
Overall Length	290mm
Operating Temperature	-40℃ ~ 150℃
Repeatability Test Tolerance	±0.2%
Main Function	Kinematic Viscosity Test, Viscosity-Temperature Curve Plotting, Polymer Intrinsic Viscosity Measurement
Structure	Rotor-free Capillary Structure
Place of Origin	Germany
Applicable Fluid	Transparent Newtonian Fluids
Matching Equipment	High & Low Temperature Thermostatic Bath, Timing Device, Suction Rubber Tube

Product Feature

Original German Calibration, Ultra High Repeatability ±0.2%Original manufactured by SI Analytics Germany, each tube individually calibrated with precise constant K=0.005. Test tolerance controlled within ±0.2% for repeated tests, traceable data supports compliant test reports for third-party labs.
Ultra Wide -40~150℃ Operating Temperature for High/Low Temp SimulationDifferent from ordinary glass viscometers, it covers full working conditions from freezing low temperature to high heating, simulating viscosity variation of oil, resin and cosmetics under extreme temperatures for viscosity-temperature curve plotting.
Standard No.0a Capillary 0.53mm, Precise Range 0.8–5mm²/sNo.0a dedicated capillary with 0.53mm inner diameter optimized for medium-low viscosity transparent fluids, accurate measuring range ideal for engine oil, resin and dilute polymer solutions.
Classic Ubbelohde Suspended Design for Dilution Test Without Tube ReplacementSide suspended arm eliminates liquid column height interference on test results. Multi-gradient dilution molecular weight tests can be finished on one tube, cutting consumable cost and operational error.
Integrated Borosilicate Glass, Temperature & Solvent Resistant, Easy to CleanHeat & corrosion resistant one-piece blown glass withstands temperature difference from -40℃ to 150℃, resistant to acid, alkali and organic solvents. Smooth inner wall avoids sample residue, support ultrasonic cleaning and high-temperature drying; permanent etched marks will never fade.
Universal Standard Size Compatible with All Thermostatic BathsStandard 290mm overall length and 15–20ml filling volume fit all common lab viscometer holders. Rotor-free capillary design works perfectly with high/low temperature baths for complete viscosity analysis, widely used for teaching and industrial quality control.

used for kinematic & intrinsic viscosity testing of transparent Newtonian fluids in polymer, petroleum,delivering precise and stable test data for lab thermostatic bath viscosity analysis.