Ubbelohde Viscosimeter 53221,Cap.-no.IIa calibrated, Capillary Ubbelohde Viscometer 1.69mm Constant K 0.5 Viscosity-Temperature Curve-Labcan Scientific

Product Description

SI Analytics 53221 Ubbelohde Viscosimeter, normal form DIN (Part No.285400189) is German-manufactured suspended-level glass capillary viscometer, specially optimized for automatic viscosity measurement systems. It is used for precise determination of kinematic viscosity and intrinsic viscosity of transparent Newtonian fluids.

Manufactured from premium DURAN borosilicate glass, this DIN standard Ubbelohde viscometer fully complies with DIN 51562 and ISO 3105 specifications. Capillary IIa supports measuring range of 50–500 cSt, widely suitable for medium-high viscosity base oils, polymer solutions, resins, biodiesel and chemical additives.

The suspended-level structural design eliminates measurement errors caused by inconsistent sample filling volume, delivering outstanding repeatability, ideal for serial dilution tests for polymer molecular weight analysis according to ISO 1628. Permanently etched timing ring marks support both manual timing and automated optical detection. Perfectly matched with SI Analytics AVS series automatic viscosity testers. Every viscometer is individually calibrated in Germany and delivered with official calibration constant and traceable certificate.

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Product Parameters

Specification	Details
Brand	SI Analytics (Xylem Analytics Germany GmbH, formerly Schott Instruments)
Model Code	53221
Article No. / Part Number	285400189
Product Type	Normal Form DIN Ubbelohde Viscometer (Suspended-level Capillary Viscometer, designed for automatic measurement)
Capillary Size	IIa
Viscosity Constant K	0.5 mm²/s²
Kinematic Viscosity Measuring Range	50 ~ 500 mm²/s (cSt)
Recommended Minimum Flow Time	≥200 s
Required Sample Volume	15–20 mL
Compliance Standards	DIN 51562 Part 1, ISO 3105, BS 188
Applicable Samples	Transparent Newtonian liquids
Material	DURAN® Borosilicate Glass
Overall Length	approx. 290 mm
Factory Configuration	Individually factory calibrated, supplied with official viscosity constant K certificate
Compatible Equipment	Constant-temperature baths, ViscoClock plus, AVS®24 / AVS®26 series automatic viscosity measuring systems

Product Feature

Bullet Point

• German-made DURAN borosilicate glass, excellent chemical & thermal stability

• DIN normal-form geometry, fully compliant with DIN 51562 and ISO 3105

• Optimized design for AVS series automatic viscosity measurement systems

• Suspended-level design, eliminates volume error for serial dilution experiments

• Capillary IIa, measuring range: 50–500 cSt for medium-high viscosity liquids

• Individually factory calibrated, supplied with official constant K certificate

• Permanent etched timing marks for automatic optical reading & manual timing

• Traceable measurement data, suitable for European standard test reports

Long Paragraph Version

Precision hand-blown DURAN borosilicate glass construction provides reliable resistance against thermal shock and most laboratory organic solvents. Standard DIN normal-form geometry ensures consistent test results and full data traceability to meet European industrial and laboratory testing specifications. The suspended-level design removes deviations caused by inconsistent filling volumes, greatly simplifying repeated dilution analysis for polymer research. Each viscometer receives independent calibration in Germany with documented viscosity constant K for direct viscosity calculation. Optimized Capillary IIa bore maintains stable laminar flow across the 50–500 cSt measuring range. Abrasion-resistant permanently etched timing rings guarantee accurate reading for long-term continuous testing. Compatible with manual stopwatch operation and automated detection with SI Analytics AVS instruments, widely deployed in petrochemical QC labs, third-party testing organizations and university rheology research laboratories.

SI Analytics 53221 DIN Ubbelohde Viscosimeter, Capillary IIa, Part No.285400189. Measuring range 50–500 cSt, complies with DIN 51562 & ISO 3105. Factory calibrated glass viscometer for transparent Newtonian liquids, compatible with AVS automatic viscosity systems.

Bullet Point

Long Paragraph Version