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Cobalt Chloride
Cobalt Chloride (Product Code: SCL376/093) is an analytical reagent grade salt used to prepare blue-to-pink moisture indicator papers for detecting water in school and college biology practicals. Packed as 100 gm with its MSDS, it lets teachers make their own strips for comparing water loss from the two surfaces of a leaf, the base chemical of a home-made transpiration experiment kit in India's school labs. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Product | Cobalt Chloride |
| Grade | Analytical reagent |
| Pack size | 100 gm |
| Documentation | Supplied with MSDS |
| Shelf life | Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. |
| Product code | SCL376/093 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Cobalt Chloride Used For?
To make indicator paper, strips of filter paper are soaked in cobalt chloride solution and dried until fully blue, then kept in a desiccator until needed. In the classic transpiration practical, one strip is held against the upper surface of a leaf and another against the lower surface, each covered with a glass slide and clipped in place. Students time how long each strip takes to turn pink and relate the difference to the number of stomata on each surface.
The same papers confirm that a colourless liquid is water, a routine test in botany and general science. Cobalt compounds are toxic and can irritate or sensitise skin, so prepare the solution and strips wearing gloves, avoid raising dust and wash hands afterwards. The solid readily takes up moisture from the air, so reseal the container quickly after weighing and keep it dry as the MSDS advises.
Supplier
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, an Ambala, Haryana company that supplies laboratory reagents such as cobalt chloride together with glassware and teaching apparatus to schools, colleges and distributors. For vendor registration, the supplying company is Jain Scientific Equipments Private Limited (CIN U29309HR2020PTC087597, GSTIN 06AAECJ8618A1ZT). Read our company profile for more.
Related Biology Lab Products
Items used with cobalt chloride in moisture-testing and transpiration work:
- Cobalt Chloride Paper — ready-made test paper if you prefer not to prepare your own
- Whatman's Filter Paper No 1 — the paper base for home-made indicator strips
- Dessicator (Soil Analysis) — keeps dried blue papers free of moisture until use
- Plain Slides — hold the papers flat against the leaf surfaces
- Ganog's Potometer — measures the rate of water uptake for a quantitative follow-up
See the complete Biology Lab range for further items.
Frequently Asked Questions
Why does Cobalt Chloride change colour?
Cobalt Chloride changes colour because the anhydrous salt is blue and the hydrated salt is pink. When it absorbs water it turns pink, and drying it again restores the blue colour, which is why it works as a simple moisture indicator.
How do I make test papers from Cobalt Chloride?
To make test papers from Cobalt Chloride, soak filter-paper strips in a cobalt chloride solution, dry them until evenly blue, and store them in a desiccator or sealed container. Wear gloves throughout and handle the finished strips with dry forceps.
How much does one pack of Cobalt Chloride contain?
One pack of Cobalt Chloride contains 100 gm of analytical reagent grade material, supplied with its MSDS. Only a small amount is needed to impregnate a batch of paper strips, so plan the number of packs by the classes that will run the practical.
Is Cobalt Chloride safe for school practicals?
Cobalt Chloride can be used in school practicals with care: it is toxic if swallowed and can sensitise skin. Teachers should prepare the solution and papers wearing gloves, and students should handle only the finished strips, following the MSDS.
How long does Cobalt Chloride keep?
The shelf life of Cobalt Chloride depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. Because the salt absorbs moisture from the air, reseal the container quickly and store it somewhere dry.
Who supplies Cobalt Chloride?
Cobalt Chloride is supplied by Jain Scientific Equipments Pvt Ltd, trading as ScienceLab, from Ambala, Haryana, India. The company supplies it to schools, colleges and distributors in India and international markets, alongside the filter paper and glassware used for transpiration practicals.
What should a quotation request for Cobalt Chloride include?
A quotation request for Cobalt Chloride should list code SCL376/093, the number of 100 gm packs, your delivery address and any other transpiration practical items you need. Send it through our contact page for a combined quotation.
Request a Quote
To request a price for Cobalt Chloride (SCL376/093), use our contact page or add it to the enquiry cart with the rest of your transpiration practical list.
Last updated: 24 September 2026
