Product Description
Flow Cups
These flow cups cover most of the standards specified in Britain, France, Germany, USA and by ISO.
With the exception of Zahn and Parlin (Brass) type all flowcups are precision machined from high quality aluminium and feature stainless steel nozzle inserts (depending upon the standard specification).
Product Code Orifice diameter Viscosity range Flow times
Ref 401 Series (old type) BS3900 : Part A6, 1971 401/2 - B2 2.38mm (0.09) 38-71cSt 30 - 300 secs
This specification replaced by EN ISO 2431/8S3900 401/3 - B3 3.17mm (0.12) 38-147cSt
part A6:1996 - see Ref 417 401/4 - B4 3.97mm (0.16) 71-455cSt
401/5 - B5 4.76mm (0.19) 299-781cSt
401/6 - B6 7.14mm (0.28) 781-1650cSt
Ref 404 Series (old type) DIN 53 211 404/4 4mm (0.16) 112 - 685cSt 25 - 150 secs
The orifices are manufactured from stainless steel. (For options
N.B. Special orifices available to order see Ref 417)
e.g. 404/2mm; 404/6mm; 404/8mm.
This specification replaced by EN ISO 2431 - see Ref 417
Ref 406 series ASTM D1200 (Ford) 406/1 No 1 2.1mm (0.08) 10-35cSt 55-100 secs
The orifices are manufactured from stainless steel. 406/2 No 2 2.8mm (0.11) 25-120cSt 40-100 secs
406/3 No 3 3.4mm (0.13) 49-220cSt 30-100 secs
406/4 No 4 4.1mm (0.16) 70-370cSt 30-100 secs
406/5 No 5 5.8mm (0.23) 200-1200cSt 30-100 secs
Ref 417 Series BS EN ISO 2431, ASTM D 5125, 417/3 No 3 3 mm (0.12) 7-42cSt 30-100 secs
BS3900 part A6:1996 417/4 No 4 4mm (0.16) 35-135cSt
The orifices are manufactured from stainless steel 417/5 No 5 5mm (0.20) 91-325cSt
417/6 No 6 6mm (0.24) 188-684cSt
417/8 No 8 8mm (0.31) 600-2000cSt
Ref 419 Series AFNOR CUPS. NF -T - 30014 419/2.5 2.5mm (0.10) 5-140cSt 30-100 secs
419/4 4mm (0.16) 50-1100cSt
419/6 6mm (0.24) 510-5100cSt
417/8 No 8 8mm (0.31) 700-11500cSt
Ref 420 Series FRIKMAR CUP. 420/2 2mm (0.08) 25-150 secs
A dip cup format based on old Ref. 404 style cup 420/4 4mm (0.16) 112-685cSt
DIN 53 211. (internal dimensions) 420/6 6mm (0.24)
The orifices are manufactured from stainless steel
Ref 405 Series ASTM D 4212 Zahn Cups. 405/1 1.93mm (0.08) 5-60cSt 35-80 secs
These cups are manufactured from brass 405/2 2.69mm (0.11) 20-250cSt 20-80 secs and then bright nickel plated for a superior finish 405/3 3.86mm (0.15) 100-800cSt 20-80 secs
405/4 4.39mm (0.17) 200-1200cSt 20-80 secs
405/5 5.41mm (0.21) 400-1800cSt 20-80 secs
Precision Viscosity Measurement for Diverse LiquidsIdeal for paint, ink, coating, and chemical testing, Flow Cups provide reliable viscosity readings across a broad measurement range (10 ~ 1000 Centistokes). Their robust design, availability in several models such as ISO, Ford, Zahn, B4, and B3, and strict adherence to international standards make these viscometer cups a trusted choice for laboratories and production floors.
User-Friendly and Durable ConstructionBuilt from corrosion-resistant stainless steel or brass, each Flow Cup features a mirror-polished finish for easy cleaning and minimal contamination. Ergonomically designed handlesavailable in metal or woodenhance comfort during manual measurements. Replacement orifices are offered for flexibility and prolonged cup lifespan.
FAQs of Flow Cups:
Q: How do I use a Flow Cup to measure viscosity?
A: To measure viscosity, fill the Flow Cup with your liquid sample up to the marked capacity, allow the sample to equilibrate to ambient temperature (up to 50C), then open the orifice to start flow. Time the outflow using a stopwatch, and compare the results against the appropriate calibration chart for accurate centistokes (cSt) measurement.
Q: What liquids can be tested with these Flow Cups?
A: These Flow Cups are suitable for testing the viscosity of paints, inks, coatings, chemicals, and other lab liquids, making them versatile for both laboratory and industrial environments.
Q: When is it necessary to replace the orifice on the Flow Cup?
A: Replacement of the orifice is recommended if there are signs of wear, damage, or residue build-up, which may affect measurement accuracy. Replacement orifices are available for all models to maintain optimal performance.
Q: Where can Flow Cups be used?
A: Flow Cups are commonly utilized in laboratories, paint manufacturing units, coating plants, chemical analysis labs, and quality control departments where precision viscosity measurements are required.
Q: What are the benefits of using a mirror-polished Flow Cup?
A: Mirror-polished Flow Cups resist corrosion and are easy to clean, ensuring minimum sample contamination and highly accurate viscosity readings during repeated use.
Q: What is the process for cleaning and maintaining the Flow Cup?
A: After each use, rinse the cup and orifice with a suitable solvent based on the liquid tested. Wipe with a lint-free cloth, and ensure all parts are thoroughly dried before storage. Regular inspections help preserve accuracy and extend the cups life.
Q: How accurate are the viscosity measurements obtained using these Flow Cups?
A: These Flow Cups deliver reliable viscosity measurements with a precision of 1 second, meeting ISO and ASTM international standards for laboratory and industrial applications.