IWAKI Class A Volumetric Glassware
Certified volumetric laboratory glassware for accurate liquid-volume measurement, solution preparation, dilution, titration and routine analytical laboratory work.
IWAKI volumetric glassware combines Class A volumetric accuracy with product identification, batch traceability and manufacturer documentation. The range is designed for pharmaceutical, industrial, research, educational and quality-control laboratories where reliable measurements and retained documentation are important.
- Class A volumetric flasks, measuring cylinders, volumetric pipettes, measuring pipettes and burettes.
- Traceable batch identification and manufacturer batch certificates for certified volumetric glassware.
- Manufactured from borosilicate laboratory glass for chemical resistance, dimensional stability and routine laboratory use.
- Clear and amber-coated configurations available for selected volumetric products and applications.
- Choice of plastic or glass stoppers and burettes with glass or PTFE stopcocks across the product range.
- Calibration-certified volumetric products can be arranged where individual calibration documentation is required.
Supplied and supported in Pakistan by Continental Worldwide Trading Company (CWTC), listed by IWAKI Glass Indonesia as its distributor for Pakistan.
Key Features
Batch number on every article and box
The batch code links the individual piece and its packaging to the corresponding batch certificate.
Batch certificate to product standards
The certificate records the product type, nominal volume, tolerance, batch and test information against the applicable volumetric standard.
Class A volumetric tolerances
The listed flasks, pipettes, cylinders and burettes are supplied to Class A tolerances for their respective product standards.
ISO/IEC 17025 calibration laboratory
IWAKI states that its calibration laboratory is accredited to ISO/IEC 17025, the international competence standard for testing and calibration laboratories.
ISO 9001 quality management
IWAKI publishes ISO 9001 certification for the manufacture of laboratory glassware.
Borosilicate glass 3.3 / CTE-33
The glass-analysis certificate identifies borosilicate glass with a linear thermal-expansion coefficient in the 3.3 class.
Amber graduations and amber coating
Amber graduations improve contrast and chemical resistance; amber-coated versions are available for selected light-sensitive applications.
Choice of closures and stopcocks
The range includes plastic or glass stoppers and burettes with glass or PTFE stopcocks.
Application Areas
PHARMACEUTICAL QC AND REGULATED LABS
Preparation of standards, reagents, assay solutions, dilutions and titrants where controlled volume accuracy and retained documentation are important.
Why it fits: ISO/IEC 17025 does not mean the pharmaceutical QC laboratory itself must be accredited. The value is that calibration work is performed by a laboratory assessed for competence, giving stronger evidence for supplier qualification, GMP documentation and audit review.
RESEARCH AND DEVELOPMENT LABS
Accurate preparation and transfer of solutions during formulation, method development, synthesis, analytical research and pilot work.
Why it fits: Batch-certified Class A glassware supports reproducibility while avoiding the cost of individual certification for every routine article unless the method requires it.
GENERAL CHEMISTRY LABORATORIES
Routine solution preparation, titration, dilution, teaching, industrial chemistry and standard laboratory measurements.
Why it fits: A broad range of capacities and closure options allows one traceable glassware family to cover common laboratory workflows.
Volumetric Glassware Product Range
Volumetric Flask with Plastic Stopper - Clear
Class A one-mark flask with interchangeable plastic stopper and chemically resistant amber graduation.
Graduation / construction: Amber graduation; plastic stopper; calibrated at 20 °C
Reference standard: ISO 1042:1998 (catalogue reference)
Technical data
| Code No. | Capacity (mL) | Tolerance (mL) | Height (mm) | TS Size | Pcs/Case |
|---|---|---|---|---|---|
| 5645-5 | 5 | ± 0.025 | 70 | 9 | 10 |
| 5645-10 | 10 | ± 0.025 | 90 | 9 | 10 |
| 5645-20 | 20 | ± 0.04 | 110 | 9 | 10 |
| 5645-25 | 25 | ± 0.04 | 120 | 9 | 10 |
| 5645-50 | 50 | ± 0.06 | 150 | 13 | 10 |
| 5645-100 | 100 | ± 0.10 | 180 | 13 | 10 |
| 5645-200 | 200 | ± 0.15 | 224 | 16 | 2 |
| 5645-250 | 250 | ± 0.15 | 231 | 16 | 2 |
| 5645-500 | 500 | ± 0.25 | 280 | 19 | 2 |
| 5645-1000 | 1,000 | ± 0.40 | 325 | 22 | 2 |
| 5645-2000 | 2,000 | ± 0.60 | 400 | 27 | 2 |
Volumetric Flask with Plastic Stopper - Amber Coated
Class A volumetric flask with amber coating for light-sensitive solutions and white graduation for contrast.
Graduation / construction: White graduation; amber-coated surface; plastic stopper
Reference standard: ISO 1042:1998 (catalogue reference)
Technical data
| Code No. | Capacity (mL) | Tolerance (mL) | Height (mm) | TS Size | Pcs/Case |
|---|---|---|---|---|---|
| 55645-5 | 5 | ± 0.025 | 70 | 9 | 10 |
| 55645-10 | 10 | ± 0.025 | 90 | 9 | 10 |
| 5645-20 | 20 | ± 0.04 | 110 | 9 | 10 |
| 5645-25 | 25 | ± 0.04 | 120 | 9 | 10 |
| 5645-50 | 50 | ± 0.06 | 150 | 13 | 10 |
| 5645-100 | 100 | ± 0.10 | 180 | 13 | 10 |
| 5645-200 | 200 | ± 0.15 | 224 | 16 | 2 |
| 5645-250 | 250 | ± 0.15 | 231 | 16 | 2 |
| 5645-500 | 500 | ± 0.25 | 280 | 19 | 2 |
| 5645-1000 | 1,000 | ± 0.40 | 325 | 22 | 2 |
| 5645-2000 | 2,000 | ± 0.60 | 400 | 27 | 2 |
Volumetric Flask with Glass Stopper - Clear
Class A one-mark flask with interchangeable glass stopper for laboratories preferring an all-glass closure.
Graduation / construction: Amber graduation; interchangeable glass stopper
Reference standard: ISO 1042:1998 (catalogue reference)
Technical data
| Code No. | Capacity (mL) | Tolerance (mL) | Height (mm) | TS Size | Pcs/Case |
|---|---|---|---|---|---|
| 5640-5 | 5 | ± 0.025 | 70 | 9 | 10 |
| 5640-10 | 10 | ± 0.025 | 90 | 9 | 10 |
| 5640-20 | 20 | ± 0.04 | 110 | 9 | 10 |
| 5640-25 | 25 | ± 0.04 | 120 | 9 | 10 |
| 5640-50 | 50 | ± 0.06 | 150 | 13 | 10 |
| 5640-100 | 100 | ± 0.10 | 180 | 13 | 10 |
| 5640-200 | 200 | ± 0.15 | 224 | 16 | 2 |
| 5640-250 | 250 | ± 0.15 | 231 | 16 | 2 |
| 5640-500 | 500 | ± 0.25 | 280 | 19 | 2 |
| 5640-1000 | 1,000 | ± 0.40 | 325 | 22 | 2 |
| 5640-2000 | 2,000 | ± 0.60 | 400 | 27 | 2 |
Measuring Cylinder - Class A, Amber Graduation
Tall-form graduated cylinder for measuring a range of liquid volumes with Class A tolerance.
Graduation / construction: Graduations from 0.1 to 20 mL; amber scale
Reference standard: ISO 4788:2005
Technical data
| Code No. | Capacity (mL) | Graduation (mL) | Tolerance (mL) | Height (mm) | Pcs/Case |
|---|---|---|---|---|---|
| 3022-5-N | 5 | 0.1 | ± 0.05 | 114 | 10 |
| 3022-10-N | 10 | 0.2 | ± 0.1 | 137 | 10 |
| 3022-25-N | 25 | 0.5 | ± 0.25 | 167 | 10 |
| 3022-50-N | 50 | 1 | ± 0.5 | 197 | 10 |
| 3022-100-N | 100 | 1 | ± 0.5 | 250 | 10 |
| 3022-250-N | 250 | 2 | ± 1.0 | 305 | 2 |
| 3022-500-N | 500 | 5 | ± 2.5 | 360 | 2 |
| 3022-1000-N | 1,000 | 10 | ± 5.0 | 420 | 2 |
| 3022-2000-N | 2,000 | 20 | ± 10.0 | 485 | 2 |
Measuring Cylinder with Plastic Stopper - Class A
Graduated cylinder with interchangeable plastic stopper for temporary closure, mixing and protected handling.
Graduation / construction: Graduations from 0.2 to 5 mL; amber scale; plastic stopper
Reference standard: ISO 4788:2005
Technical data
| Code No. | Capacity (mL) | Graduation (mL) | Tolerance (mL) | Height (mm) | TS Size | Pcs/Case |
|---|---|---|---|---|---|---|
| 2982-10-N | 10 | 0.2 | ± 0.1 | 137 | 9 | 10 |
| 2982-25-N | 25 | 0.5 | ± 0.25 | 180 | 13 | 10 |
| 2982-50-N | 50 | 1 | ± 0.5 | 213 | 16 | 10 |
| 2982-100-N | 100 | 1 | ± 0.5 | 250 | 19 | 10 |
| 2982-250-N | 250 | 2 | ± 1.0 | 330 | 22 | 2 |
| 2982-500-N | 500 | 5 | ± 2.5 | 390 | 27 | 2 |
Measuring Pipette - Mohr Type
Class A graduated pipette for delivering selected volumes from a graduated scale.
Graduation / construction: Graduations from 0.001 to 0.2 mL; ISO colour coding where applicable
Reference standard: ISO 835:2007
Technical data
| Code No. | Capacity (mL) | Graduation (mL) | Tolerance (mL) | Length (mm) | Colour Code | Pcs/Case |
|---|---|---|---|---|---|---|
| *7000-0.1 | 0.1 | 0.001 | ± 0.001 | 350 | — | 10 |
| 7000-0.2-C | 0.2 | 0.002 | ± 0.002 | 360 | 2 White | 10 |
| 7000-0.5-C | 0.5 | 0.005 | ± 0.005 | 360 | 1 Green | 10 |
| 7000-1-C | 1 | 0.01 | ± 0.006 | 360 | 1 Yellow | 10 |
| 7000-2-C | 2 | 0.02 | ± 0.01 | 360 | 1 Black | 10 |
| 7000-5-C | 5 | 0.05 | ± 0.03 | 360 | 1 Red | 10 |
| 7000-10-C | 10 | 0.1 | ± 0.05 | 360 | 1 Orange | 10 |
| 7000-20-C | 20 | 0.1 | ± 0.1 | 435 | 2 Yellow | 10 |
| 7000-25-C | 25 | 0.1 | ± 0.1 | 450 | 1 White | 10 |
| **7000-50-C | 50 | 0.2 | ± 0.2 | 455 | 1 Black | 10 |
Volumetric Pipette - Class A
Single-volume transfer pipette for accurate delivery of one defined liquid volume.
Graduation / construction: Amber marking and ISO colour coding; delivery convention to be confirmed by exact order code
Reference standard: ISO 648:2008
Technical data
| Code No. | Capacity (mL) | Tolerance (mL) | Length (mm) | Colour Code | Pcs/Case |
|---|---|---|---|---|---|
| 7100-0.5-C | 0.5 | ± 0.005 | 300 | 2 Black | 10 |
| 7100-1-C | 1 | ± 0.008 | 320 | 1 Blue | 10 |
| 7100-2-C | 2 | ± 0.01 | 345 | 1 Orange | 10 |
| *7100-2.5 | 2.5 | ± 0.015 | 350 | — | 10 |
| *7100-3-C | 3 | ± 0.01 | 350 | 1 Black | 10 |
| *7100-4-C | 4 | ± 0.015 | 380 | 2 Red | 10 |
| 7100-5-C | 5 | ± 0.015 | 380 | 1 White | 10 |
| *7100-6-C | 6 | ± 0.015 | 380 | 2 Orange | 10 |
| *7100-7-C | 7 | ± 0.015 | 410 | 2 Green | 10 |
| *7100-8-C | 8 | ± 0.02 | 410 | 1 Blue | 10 |
| *7100-9-C | 9 | ± 0.02 | 410 | 1 Black | 10 |
| 7100-10-C | 10 | ± 0.02 | 440 | 1 Red | 10 |
| *7100-15-C | 15 | ± 0.03 | 450 | 1 Green | 10 |
| 7100-20-C | 20 | ± 0.03 | 510 | 1 Yellow | 10 |
| 7100-25-C | 25 | ± 0.03 | 525 | 1 Blue | 10 |
| *7100-30-C | 30 | ± 0.03 | 480 | 1 Black | 10 |
| *7100-40-C | 40 | ± 0.05 | 510 | 1 White | 10 |
| 7100-50-C | 50 | ± 0.05 | 545 | 1 Red | 10 |
| 7100-100-C | 100 | ± 0.08 | 595 | 1 Yellow | 10 |
Burette with Glass Stopcock - Clear
Class A clear burette with glass stopcock and amber graduation for controlled titrant delivery.
Graduation / construction: Clear glass; amber scale; glass stopcock
Reference standard: ISO 385:2005
Technical data
| Code No. | Capacity (mL) | Tolerance (mL) | Length (mm) | Pcs/Case |
|---|---|---|---|---|
| BURET10S | 10 | ± 0.02 | 580 | 1 |
| BURET25S | 25 | ± 0.05 | 650 | 1 |
| BURET50S | 50 | ± 0.05 | 850 | 1 |
| BURET100S | 100 | ± 0.1 | 865 | 1 |
Burette with Glass Stopcock - Amber Coated
Amber-coated Class A burette with white graduation and glass stopcock for light-sensitive titrants.
Graduation / construction: Amber-coated surface; white scale; glass stopcock
Reference standard: ISO 385:2005
Technical data
| Code No. | Capacity (mL) | Tolerance (mL) | Length (mm) | Pcs/Case |
|---|---|---|---|---|
| B-BURET10S | 10 | ± 0.02 | 580 | 1 |
| B-BURET25S | 25 | ± 0.05 | 650 | 1 |
| B-BURET50S | 50 | ± 0.05 | 850 | 1 |
| B-BURET100S | 100 | ± 0.1 | 865 | 1 |
Burette with PTFE Stopcock - Clear
Class A clear burette with PTFE stopcock for smooth operation and an alternative wetted stopcock material.
Graduation / construction: Clear glass; amber scale; PTFE stopcock
Reference standard: ISO 385:2005
Technical data
| Code No. | Capacity (mL) | Tolerance (mL) | Length (mm) | Pcs/Case |
|---|---|---|---|---|
| 2103BURET10S | 10 | ± 0.02 | 570 | 1 |
| 2103BURET25S | 25 | ± 0.05 | 640 | 1 |
| 2103BURET50S | 50 | ± 0.05 | 840 | 1 |
| 2103BURET100S | 100 | ± 0.1 | 865 | 1 |
Burette with PTFE Stopcock - Amber Coated
Amber-coated Class A burette with white graduation and PTFE stopcock for selected light-sensitive titrations.
Graduation / construction: Amber-coated surface; white scale; PTFE stopcock
Reference standard: ISO 385:2005
Technical data
| Code No. | Capacity (mL) | Tolerance (mL) | Length (mm) | Pcs/Case |
|---|---|---|---|---|
| B-2103BURET10S | 10 | ± 0.02 | 570 | 1 |
| B-2103BURET25S | 25 | ± 0.05 | 640 | 1 |
| B-2103BURET50S | 50 | ± 0.05 | 840 | 1 |
Quality, Traceability and Certificate Framework
| Document / claim | What it means for the customer |
|---|---|
| Batch certificate | Batch-level evidence connected to the batch code printed on each article and box. Suitable for routine supplier documentation and traceability. |
| Individual calibration certificate | Item-specific calibration result for an individually identified article. Order separately where required by SOP, risk assessment or customer specification. |
| ISO/IEC 17025 accreditation | Evidence that the calibration laboratory has been assessed for competence, impartiality and consistent operation within its accredited scope. |
| ISO 9001 certification | Evidence of a quality-management system covering the manufacture of laboratory glassware; it is not a calibration accreditation. |
| CTE-33 glass analysis | Material-composition / thermal-expansion evidence for borosilicate glass 3.3; it is not evidence of volumetric accuracy. |
Certificates and documents are provided per batch or per instrument as described above; individual certified glassware is available on request
IWAKI Certifications
IWAKI's laboratory glassware is manufactured and calibrated under internationally recognized quality standards, with every batch traceable to a verified certificate.
ISO 9001 Manufacturing QMS
This certificate confirms that IWAKI's manufacturing facility operates under a documented quality management system, covering process control, traceability, and consistency across every production run.
Official image source
ISO/IEC 17025 Calibration Laboratory
Accreditation under KAN confirms that IWAKI's calibration laboratory meets internationally recognized requirements for testing and measurement competence, ensuring accurate, traceable results.
Official image source
Borosilicate Glass 3.3 / CTE-33 Analysis
Independent glass analysis confirms IWAKI glassware's coefficient of thermal expansion, verifying the borosilicate 3.3 composition behind its thermal stability and resistance to breakage.
Official image sourceFrequently Asked Question
The batch number connects the article and package to a batch certificate containing product, tolerance, test and acceptance information. It improves traceability but is not a unique serial number for each piece.
No. A batch certificate reports evidence for the production batch. An individual calibration certificate reports calibration results for a specifically identified article and normally requires a separate order route.
ISO/IEC 17025 is used to assess the competence, impartiality and consistent operation of testing and calibration laboratories. Where volumetric calibration is within the current accredited scope, it provides stronger confidence in methods, traceability, uncertainty evaluation and result validity.
Not generally. Pharmaceutical QC laboratories are normally governed by GMP and their own regulatory framework. The relevance here is that calibration evidence from a competent accredited laboratory can support equipment control, supplier qualification and audit documentation.
Class A identifies the tighter tolerance class defined for the relevant volumetric-glassware standard. The exact permissible error depends on product type and nominal capacity.
CTE-33 describes borosilicate glass with a low linear coefficient of thermal expansion in the 3.3 class. It supports thermal-shock resistance and dimensional stability but does not itself certify the volume.
Amber coating helps protect selected light-sensitive solutions. White graduations are used on the amber-coated items for visibility.
Yes, batch certificates can be downloaded online. Please send the batch number and order code of the glassware via www.cwtc.com.pk/enquiry and you will receive the batch certificate within 48 hours. Verifying batch certificate is one of the ways to verify the authenticity of IWAKI glassware.
There are no other brand names for IWAKI glassware, any variants are examples of fake or counterfeit glassware.
Pyrex IWAKI no longer exists as a brand and only fake glassware has “PYREX Iwaki” printed on it. IWAKI ended its association with Pyrex trademark many years ago.
All other brands of glassware that mention IWAKI such as Pyrex IWAKI, IWAKI China, IWAKI Germany are all fake/reprinted glassware which do not have the same quality, traceability of authentic IWAKI Glassware.
You can verify the authenticity of glassware in several ways:
- Buy from CWTC or their authorized local distributors in Pakistan.
- Check with the manufacturer, IWAKI only has one authorized distributor in Pakistan for over 35 years and can be verified from https://iwakiglassindonesia.com/en/contact_us
- Always verify batch certificate/quality certificate when purchasing IWAKI glassware
- Examine product labels and printing quality
Local supply and support in Pakistan
CWTC supplies IWAKI laboratory glassware in Pakistan and can support laboratories with product selection, capacity planning, quotation, stock availability and documentation retrieval.
For regulated or audit-sensitive customers, CWTC should confirm the intended use before quotation so the correct documentation route is selected: routine batch certificate, certificate of assurance, certificate of origin or individually calibrated product with calibration certificate.
Documentation & Downloads
Use the official IWAKI resources below for the latest technical specifications, manuals and product documentation.
Need Expert Advice?
CWTC can help you with your application or any queries related to our equipment or your lab requirement, connect with our product experts on the contact information below.
