Volumetric Flask, Class B

Volumetric Flask, Class B

An excellent alternative to glass flasks, these plastic volumetric flasks meet Class B tolerances per DIN EN ISO 1042. Gravimetrically calibrated to contain at 20 C. Available in crystal clear PMP or highly transparent PP, with PP stopper caps or screw caps. The PMP flasks can tolerate thermal stress of up to 121 C (autoclaving) without permanent exceeding of the tolerance limits (PP flasks up to 60 C). However, to preserve markings, cleaning at no higher than 60 C is recommended.

Frequently Asked Questions

1. Are the graduations on your volumetric plasticware molded on the inside, outside, or simply screen printed?
None of the graduations are molded on the interior. They would be very difficult to mold in that way, and would interfere with the accuracy. Exterior molding also allows for a better grip on the item. However, it does differ by product, specifically:

• Graduated cylinders: All models have molded graduations. Some have screened overprint.
• Volumetric flasks: All models have a scored graduation, with coloring added.
• Erlenmeyer flasks: All models have screen printed graduations.
• Griffin Beakers: Most models have molded graduations (with the exception cat. no. V110204-V111004, ETFE Griffin beakers, and some small volume sizes). Some have screened overprint.
• Graduated pitchers: All models, with the exception of the nesting models, have molded graduations. Some have screened overprint. Nesting models have printed graduations.

2. How should I clean my volumetric plasticware?
Polyolefins, such as PP and PMP, as well as fluoroplastics (ETFE), have water-repellent surfaces that are very durable and easy to clean. For cleaning, depending on the level of contamination, commercially available neutral or alkaline detergents (i.e. Mucasol) can be used. Please note that no scrubbing agents or scouring pads should be used for labware made from plastics.Plastic labware can be cleaned and dried in a laboratory diswasher, noting the temperature limits of the individual products. Due to their light weight, securing the labware with washing nets is recommended; and plastic-coated wire baskets will better protect against scratching.Plastic labware can also be cleaned in an ultrasonic bath. However, direct contact with the acoustic membrane should be avoided.

3. Can I autoclave my volumetric plasticware?
The product description and/or specifications state whether or not the product can be autoclaved (note the temperature limits!). If the product is autoclavable, the recommended protocol is 20 minutes at 121 C (2 bar), according to DIN EN 285.Prior to autoclaving plastic labware, ensure that no residual contamination remains on the item. Otherwise, the residual contamination will bake on solidly during the autoclaving process. Even substances that have no effect on the plastic at room temperature can have negative effects on the plastic during the autoclaving process, including persistant clouding. Additionally, microorganisms might not be killed effectively if they are protected by the residual contamination.

WARNING These products can expose you to chemicals including Carbon black (airborne, unbound particles of respirable size), which is known to the State of California to cause cancer, and Di-n-butyl Phthalate (DBP), which is known to the State of California to cause birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.

Class B Volumetric Flask, PMP, with NS Stopper, PP

Volume mL	Tolerance mL	Height mm	Stopper NS	Qty/Pack	Cat. No.
25	0.08	115	10/19	6	V67195
50	0.12	150	12/21	6	V67295
100	0.20	180	14/23	6	V67395
250	0.30	235	19/26	5	V67495
500	0.50	270	19/26	4	V67595
1000	0.80	310	24/29	3	V67695

Class B Volumetric Flask, PP, with NS Stopper, PP

Volume mL	Tolerance mL	Height mm	Stopper NS	Qty/Pack	Cat. No.
10	0.08	90	10/19	6	V677941
25	0.08	115	10/19	6	V671941
50	0.12	150	12/21	6	V672941
100	0.20	180	14/23	6	V673941
250	0.30	235	19/26	5	V674941
500	0.50	270	19/26	4	V675941
1000	0.80	310	24/29	3	V676941

Class B Volumetric Flask, PMP, with Screw Caps, PP

Volume mL	Tolerance mL	Height mm	Thread GL	Qty/Pack	Cat. No.
10	0.08	90	18	6	V677895
25	0.08	115	18	6	V671895
50	0.12	150	18	6	V672895
100	0.20	180	18	6	V673895
250	0.30	235	25	5	V674895
500	0.50	270	25	4	V675895
1000	0.80	310	32	3	V676895

Class B Volumetric Flask, PP, with Screw Caps, PP

Volume mL	Tolerance mL	Height mm	Thread GL	Qty/Pack	Cat. No.
10	0.08	90	18	6	V677891
25	0.08	115	18	6	V671891
50	0.12	150	18	6	V672891
100	0.20	180	18	6	V673891
250	0.30	235	25	5	V674891
500	0.50	270	25	4	V675891
1000	0.80	310	32	3	V676891

• Item Group: Micropipettes
• Unit of Measure: Each
• Pack Quantity: Pack of 1