Marked Jars (Tarred) 250ml
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Product Code : SCL-CL-11519
Marked Jars (Tarred) 250ml (SKU SCL-CL-11519) is a graduated 250 ml glass flask with a frosted stopper, marked so that its graduations show the volume it contains. It can be used to prepare and keep medium batches of solution, such as dilute acids, alkalis and salt solutions for a class practical. Science Lab Supplies takes enquiries for it in Ambala, India, from schools, colleges, training institutes, tender contractors and distributors, and can dispatch each confirmed order.
Specifications
Specifications for the 250 ml marked flask are split into single rows below. In short, it is a clear glass flask of 250 ml capacity with graduations on the body and a frosted stopper closing the neck; the glass is heat resistant and chemical resistant, so warm solutions can be prepared in it and common reagents held.
| Specification | Value |
|---|---|
| SKU | SCL-CL-11519 |
| Capacity | 250 ml |
| Material | Glass flask |
| Graduations | Graduated |
| Closure | Frosted stopper |
| Colour | Clear |
| Heat resistance | Heat resistant |
| Chemical resistance | Chemical resistant |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Marked Jars (Tarred) 250ml
The 250 ml marked flask is used to dilute, mix and store a class-sized volume of solution in one stoppered vessel. It is suited to solution preparation for CBSE/NCERT Class 9–12 chemistry, B.Sc. practicals and the reagent-preparation tasks taught in laboratory technician and ITI laboratory assistant courses.
- Preparing dilute hydrochloric acid, sodium hydroxide or salt solutions for a whole class, poured in through a Glass Funnel.
- Class 12 chemistry: making up solutions used in titration and chemical kinetics practicals, with stock measured by Graduated Pipettes 25ml.
- Mixing solutions by inverting the stoppered flask, then keeping them closed until the next lesson.
Standard Scope of Supply
The Marked Jars (Tarred) 250ml comes as one graduated glass flask with its frosted stopper, matching the specification above. Funnels, pipettes and wash bottles used when filling it are separate items and can be itemised on the same quotation as the flasks.
Packing, MOQ and Lead Time
From a single flask to a full set for a preparation room, Science Lab Supplies prepares a quotation for the quantity you need. It gives the packing, delivery time and price, and the 100 ml and 500 ml marked sizes can be added so the whole order is priced together.
Science Lab Supplies can ship to buyers in Rwanda, South Africa, Qatar, Sri Lanka, Vietnam and Malaysia as an exporter holding an Importer-Exporter Code. The flasks can be priced alongside other glassware once added to the enquiry cart, the contact page takes any questions, and tender quotations follow the steps on the lab tender page.
Frequently Asked Questions
Is this 250 ml item a flask or a jar?
It is a graduated glass flask with a frosted stopper. Jars is the catalogue term; in the lab it serves as a graduated, stoppered flask for preparing and keeping solutions.
Can warm solutions be prepared in it?
Yes, the glass is heat resistant, so solutions that warm up on dissolving can be made in it. Remove the stopper while the contents are warm and let them cool before reading the level.
Which company supplies the Marked Jars (Tarred) 250ml?
Science Lab Supplies is the supplier, working from Ambala, India. It quotes schools, colleges and institutes directly, as well as distributors or contractors who handle laboratory orders for others.
How should the frosted stopper be cared for?
Keep each stopper with its own flask, rinse and dry it after use, and store the flask with a small paper strip in the neck so the stopper does not stick.
Related Measuring and Storage Glassware
Preparing solutions accurately calls for measuring vessels of several sizes, a cylinder for measuring liquids first and stoppered bottles for keeping the result. These items from the Chemistry Lab range complement the 250 ml marked flask and can be priced on the same quotation by schools and colleges.
- Pots Marked (Tarred) 100ml — 100 ml tared glass bottle with a frosted cap, graduated and clear.
- Marked Pot (Tarred) 500ml — 500 ml graduated glass flask with frosted stopper, twice this capacity.
- Measuring Cylinder 250ml — 250 ml graduated glass cylinder, heat and chemical resistant.
- Graduated Flask with Fixed Stoppers — glass flask with fixed stopper, calibrated to volume, 50 to 500 ml.
- Bottles of Dark Glass with Stoppers for Reactants — amber glass bottles of 60 to 500 ml that reduce UV light transmission.
- Glass Bottle, for Liquid Reagents (Amber) — 60 ml coloured narrow-mouth bottle with frosted stopper and corrugated cap.
- Reagent Bottles Narrow-Mouth — colourless narrow-mouth glass bottle closed by a frosted stopper.
Browse the full Chemistry Lab range, the Lab Glassware range, or all school lab equipment.
Last updated: 9 October 2026
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