Product Description
Technical Specification
Instruction ManualData Sheet

FORD/ASTM Viscosity Flow Cups

The Elcometer 2351 FORD/ASTM 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™

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

Technical Specification

Part Number Description Cup
Range (cSt)1 Certificate 
K0002351M001 Elcometer 2351/1 FORD/ASTM Viscosity Flow Cup 1 1.90mm 10-35
K0002351M002 Elcometer 2351/2 FORD/ASTM Viscosity Flow Cup 2 2.53mm 25-120
K0002351M003 Elcometer 2351/3 FORD/ASTM Viscosity Flow Cup 3 3.40mm 49-220
K0002351M004 Elcometer 2351/4 FORD/ASTM Viscosity Flow Cup 4 4.12mm 70-370
K0002351M005 Elcometer 2351/5 FORD/ASTM Viscosity Flow Cup 5 5.20mm 200-1200
K0002351M001C Elcometer 2351/1 with calibration certificate 1 1.90mm 10-35 (e)
K0002351M002C Elcometer 2351/2 with calibration certificate 2 2.53mm 25-120 (e)
K0002351M003C Elcometer 2351/3 with calibration certificate 3 3.40mm 49-220 (e)
K0002351M004C Elcometer 2351/4 with calibration certificate 4 4.12mm 70-370 (e)
K0002351M005C Elcometer 2351/5 with calibration certificate 5 5.20mm 200-1200 (e)



ASTM D 1200, ASTM D 5125

1 For information only

(e) Efflux Time 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.


Viscosity Cup Precision Stand with Thermojacket

2400 stand with thermojacket KT002400N002

Thermojacket for Viscosity Cup Precision Stand

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.