Cannon EZ Zahn Viscometer Cup Series (Model 9735-E60)
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 9735-E60 |
| Instrument Type | Efflux Viscometer |
| Compliance | ASTM D4212 |
| Time Range | 20–60 s |
| Kinematic Viscosity Range | 19–156 cSt |
Overview
The Cannon EZ Zahn Viscometer Cup Series (Model 9735-E60) is a precision-engineered efflux viscometer designed for rapid, field-deployable, and laboratory-grade kinematic viscosity measurements of Newtonian and near-Newtonian liquids. Based on the Zahn cup principle—a gravity-driven efflux method—the instrument operates by measuring the time required for a fixed volume of sample to drain through a precisely calibrated orifice under controlled ambient conditions. This method relies on the fundamental relationship between efflux time and kinematic viscosity, as empirically validated and standardized in ASTM D4212. The 9735-E60 model corresponds to Zahn Cup No. 2, optimized for mid-range viscosity applications in coatings, inks, adhesives, and solvent-based formulations where reproducibility, portability, and compliance with industry-standard test protocols are essential.
Key Features
- Manufactured in the USA to strict dimensional tolerances per ASTM D4212 Annex A1, ensuring consistent orifice geometry, cup volume, and surface finish.
- Constructed from high-grade stainless steel (304/316), delivering corrosion resistance, thermal stability, and long-term dimensional integrity—critical for repeatable efflux timing.
- Integrated ergonomic handle and level indicator facilitate vertical orientation during testing, minimizing operator-induced error.
- No external power, electronics, or calibration fluids required—enabling use in production floors, R&D labs, and remote field environments.
- Direct time-to-viscosity conversion via ASTM-provided empirical equations or pre-validated lookup tables; compatible with digital stopwatch integration for GLP-compliant timestamping.
- Each cup is individually serialized and supplied with traceable documentation supporting ISO/IEC 17025-aligned quality assurance workflows.
Sample Compatibility & Compliance
The 9735-E60 Zahn cup is suitable for low- to medium-viscosity Newtonian liquids—including alkyd resins, acrylic dispersions, lacquers, thin varnishes, and cleaning solvents—with kinematic viscosity ranging from 19 to 156 cSt at standard test temperature (typically 25 °C ± 0.5 °C). Non-Newtonian or highly thixotropic samples require caution and supplementary rheological validation. All testing must adhere to ASTM D4212 procedures: sample temperature equilibration, cup immersion depth control, meniscus-level filling, and strict timing initiation at the moment of orifice emergence. The device supports compliance with broader quality frameworks including ISO 2555, ISO 2431, and internal QC protocols aligned with FDA 21 CFR Part 11 when paired with auditable electronic timing systems and controlled documentation practices.
Software & Data Management
While the EZ Zahn cup itself is a passive mechanical device, its integration into modern QA/QC environments is enhanced through companion digital tools. Cannon provides free Excel-based calculators and CSV-compatible conversion utilities that apply ASTM D4212 polynomial equations to raw efflux times—automatically generating kinematic viscosity values with uncertainty estimates. When used with time-stamped digital stopwatches or IoT-enabled timing modules, data can be exported to LIMS platforms or ELN systems supporting audit trails, user authentication, and version-controlled SOPs. For regulated industries, full traceability—including operator ID, ambient temperature/humidity logs, cup serial number, and calibration verification records—is maintained per GLP and GMP expectations.
Applications
- Coatings & Paints: In-line viscosity verification during formulation, dilution checks, and batch release testing.
- Printing Inks: Consistency monitoring across pigment dispersion stages and press-ready adjustments.
- Adhesives & Sealants: Quick assessment of solvent evaporation effects and aging behavior.
- Automotive Refinish: Field validation of basecoat and clearcoat viscosity prior to spray application.
- Academic & Training Labs: Hands-on instruction in fluid mechanics fundamentals, standard test methodology, and uncertainty analysis.
FAQ
What is the difference between Zahn Cup No. 2 (9735-E60) and other cup numbers?
Zahn cups are differentiated by orifice diameter and internal volume. No. 2 (9735-E60) offers optimal resolution for viscosities between 19–156 cSt; lower-numbered cups (e.g., No. 1) are suited for thinner fluids, while higher numbers (e.g., No. 5) cover thicker materials.
Can this cup be used for non-Newtonian fluids?
ASTM D4212 explicitly applies to Newtonian liquids. For shear-thinning or thixotropic samples, efflux time alone does not represent a single viscosity value; rotational viscometry or capillary rheometry is recommended for accurate characterization.
How often does the cup require recalibration or certification?
As a passive mechanical standard, the cup does not drift—but physical damage, pitting, or orifice wear must be inspected visually before each use. Annual third-party verification against NIST-traceable dimensional standards is recommended for ISO/IEC 17025 laboratories.
Is temperature control mandatory during testing?
Yes. ASTM D4212 requires sample temperature stabilization within ±0.5 °C of the specified test temperature (commonly 25 °C); viscosity is highly temperature-sensitive, and uncontrolled thermal variance introduces significant measurement uncertainty.
Does Cannon provide certified reference standards for verification?
Yes—Cannon supplies NIST-traceable silicone oil standards (e.g., Cannon Standard Viscosity Oils) with certificate of analysis, enabling periodic performance verification of both cup and timing system.
