Product Description
Technical Specification
Instruction ManualData Sheet

BS Viscosity Flow Cups

The Elcometer 2354 BS Viscosity Flow Cups are very easy to use instruments made of anodized aluminium with a stainless steel orifice, for measuring the consistency of paints, varnishes and similar products.

The measured kinematic viscosity is generally expressed in seconds(s) flow time. If the Standards stipulate conversion methods the flow time can be converted into Centistokes (cSt) using the Elcometer ElcoCalc™ Mobile Apps.

Calibration certificates which offer traceability and assurance that each viscosity cup has been individually tested and comply to Standards are also available.

The cups can be supplied separately or with an adjustable stand which includes a precision level and an overflow glass draw plate. They can also be supplied with a flow jacket for temperature control (thermojacket).

ElcoCalc™ Mobile App

Fast and easy to use, ElcoCalc™ instantly converts viscosity cup flow time in seconds into Centistokes (cSt).

ElcoCalc™ is free software that is available on Android and the App Store. Compatible with Android™ mobile devices running Android™ 2.1 or later and also iPod, iPhone and iPad running iOS 4.0 or later.

Click here for more information on ElcoCalc™.

BS Viscosity Flow Cup
BS Viscosity Flow Cup OrifaceElcometer 2400 ThermojacketElcoCalc-Viscosity-Converter

Technical Specification

Part Number Description Cup
Range (cSt)1 Certificate
K0002354M003 Elcometer 2354/3 BS Viscosity Flow Cup 4 3.97mm 89-340
K0002354M004 Elcometer 2354/4 BS Viscosity Flow Cup 5 4.76mm 79-441
K0002354M003C Elcometer 2354/3 with calibration certificate 4 (d) 3.97mm 89-340 (d)
K0002354M004C Elcometer 2354/4 with calibration certificate 5 (d) 4.76mm 79-441 (d)



AS/NZS 1580.214.2 (cup 4 only), BS 3900-A6:1971 


Standards in grey have been superseded but are still recognised in some industries.

1 For information only

(d) Dimensional Certificate    

Calibration Certificate supplied as standard   

Batch Calibration Certificate supplied as standard



viscosity cup stand


Viscosity Cup Stand with Bubble Level and Glass Draw Plate

To ensure the viscosity cup is positioned correctly to carry out the test.

2400 stand with bubble level KT002400N001

Viscosity Cup Precision Stand with Bubble Level and Glass Draw Plate

To ensure the viscosity cup is positioned correctly to carry out the test.


Bubble Level for Viscosity Cup

To ensure the viscosity cup is parallel to the surface.


Viscosity Glass Draw Plate

To retain test sample until operator is ready to commence test and provides
surface for bubble level.

2400 stand with thermojacket KT002400N002

Double-walled Stand with Thermojacket

For heating test samples for viscosity measurement at specific elevated temperatures.

7300 stopwatch K0007300M201

Elcometer 7300 High Precision Stopwatch

2400 conversion disc KT002400N003 Elcometer 2400 Conversion Disc
Allowing viscosity (cSt) and flow times of different cups to be calculated.
Front: No.4 cups according to  AFNOR, BS, NF, ASTM, DIN, Zahn 2
Back: No.3-4-5-6 cups according to ISO and Zahn 3




Spirit Thermometer in °C


Spirit Thermometer in °F


Elcometer 212 Digital Pocket Thermometer (°C/°F) with Liquid Probe


Elcometer 213/2 Digital Thermometer (°C/°F)


Elcometer 213/2 Liquid Probe


How to measure viscosity using Elcometer Flow Cups

A flow cup is a cup of a specified size and volume, with an overflow channel at the top, and a hole of a defined size in the bottom. And they are available in a range of designs in accordance with National and International Standards, with various orifice diameters to suit different viscosities.

To download the video script in English click here.