TN LAB Supply Volumetric Flask 25ml Borosilicate Glass Class A Precision ISO 1042 With PTFE 10/19 Stopper 5-Pack
Why you'll like it
- High Precision Accuracy — Class A tolerance of plus or minus 0.03ml at 20 degrees Celsius ensures exact standard volume measurements per ISO 1042 standards.
- Durable Construction — Borosilicate 3.3 glass body provides superior resistance against thermal shock and aggressive chemical reagents.
- Non-Stick Operation — NS 10/19 PTFE stoppers prevent freezing and seizing in ground glass joints for effortless handling.
- Clear Calibration — Single graduation line marked precisely on the narrow neck allows accurate meniscus alignment for single-volume containment.
Product details
Description
The TN LAB Supply 25ml Volumetric Flask 5-Pack offers exceptional accuracy and reliability for precise laboratory measurements. Crafted from heavy-duty borosilicate 3.3 glass, each flask is designed to withstand thermal shock and chemical corrosion while delivering dependable performance.
Featuring a Class A precision tolerance of plus or minus 0.03ml at 20 degrees Celsius in accordance with ISO 1042 standards, these flasks ensure exacting standard solutions. The single graduation line on the narrow neck provides clear fill-point indication, while the included NS 10/19 PTFE stoppers prevent sticking and seizing during routine use.
Ideal for research laboratories, educational settings, and professional analytical procedures, this set combines robust durability with meticulous calibration.
How to use
- Fill the volumetric flask with the substance until the bottom of the meniscus aligns precisely with the graduation line etched on the neck.
- Insert the PTFE stopper securely to contain and mix the exact volume.
Ingredients
Borosilicate 3.3 Glass, Polytetrafluoroethylene (PTFE)
As printed by the brand. Check the pack label if you have an allergy.
Specifications
| Brand | TN LAB Supply |
|---|---|
| UPC | 850069276638 |
| Ships from | USA (sourced directly), checked in Navi Mumbai |
| Sold by | Dropy.in |
Ratings & reviews
From our customers
FAQs
What is a volumetric flask used for in a lab?
A volumetric flask is a precise laboratory instrument used to prepare solutions of exact volumes at a specified temperature. It features a long narrow neck with a single calibration line to ensure high accuracy during dilutions and standard solution preparation.
What is the accuracy tolerance of this 25ml volumetric flask?
This flask is built to Class A precision standards, offering a tolerance of plus or minus 0.03ml at 20 degrees Celsius in compliance with ISO 1042 regulations.
What type of material are the stoppers made of?
The stoppers are made from Polytetrafluoroethylene (PTFE) with an NS 10/19 tapered joint, which prevents sticking, seizing, and chemical corrosion.
Are these laboratory glass flasks authentic USA imports available in India?
Yes, these are authentic USA-imported TN LAB Supply products sourced directly from the United States and delivered straight to customers in India by Dropy.
How many flasks are included in this pack?
This set includes a convenient 5-pack of 25ml Class A borosilicate glass volumetric flasks.
How long will delivery take?
Most orders arrive in 15–20 days: we source each product directly from the USA, check it at our Navi Mumbai warehouse and pack it on video. Items marked Dropy Express ship from our India warehouse and arrive in 3–5 days.
Is cash on delivery available?
Full cash on delivery is available all over India on Dropy Express items. For other orders from ₹2,499 to ₹15,000 you can use Partial COD: pay 25% online now and the rest in cash on delivery.
Are your products genuine?
Yes. Every product is 100% authentic, sourced directly from the USA, quality-checked and packed on video at our Navi Mumbai warehouse.
What if my order arrives damaged or wrong?
Write to us at [email protected] as soon as it arrives. Damaged, wrong or not as described, our Buyer Protection gives you a full refund. The details are in our Return, Refund & Cancellation Policy.
Is delivery free?
Delivery is free on orders from ₹1,499. Below that a ₹79 delivery fee applies.