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Cobalt Chloride Paper
Cobalt Chloride Paper (Product Code: SCL378/094) is an indicator test paper used to detect water in school and college practicals, most often to show the moisture given off by the upper and lower surfaces of a leaf. It lets students watch transpiration happen without any instrument, which makes it a simple piece of plant biology lab equipment for botany classes. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Key Details
| Parameter | Detail |
|---|---|
| Type | Moisture indicator test paper |
| Main use | Detecting water and comparing water loss from surfaces such as leaves |
| Pack format and composition | Confirmed on enquiry |
| Product code | SCL378/094 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Cobalt Chloride Paper Used For?
Cobalt chloride papers are conventionally blue when dry and turn pink on contact with water. In the familiar classroom use, a dry strip is placed on the upper surface of a leaf and another on the lower surface, both covered with glass slides and clipped; the strip that turns pink first marks the surface losing more water, usually the underside where stomata are more numerous. It is an inexpensive addition to a transpiration experiment kit in India's school biology rooms.
Students can also touch a strip to droplets collected under a bell jar, or to an unknown colourless liquid, to confirm it is water. For clear results keep unused strips in a closed container or desiccator, handle them with dry forceps rather than fingers, and compare colours against a fresh dry strip. Wash hands after handling and keep the papers away from younger children.
Supplier
Cobalt Chloride Paper is offered by Jain Scientific Equipments Private Limited, which trades as ScienceLab from Ambala, Haryana, India. The company supplies teaching laboratories with test papers, reagents and apparatus for biology, chemistry and physics, and confirms pack details with each quotation request. More information is on our company profile.
Related Biology Lab Products
Items used alongside test papers in a transpiration practical:
- Cobalt Chloride — the reagent for preparing your own indicator strips
- Dessicator (Soil Analysis) — keeps the papers dry between classes
- Plain Slides — press the strips evenly against the leaf surface
- Bell Jar (Plant Physiology) — collects water vapour from a transpiring plant for testing
- Ganog's Potometer — measures transpiration rate as a quantitative extension
Find more in our Biology Lab category.
Frequently Asked Questions
What is Cobalt Chloride Paper used for?
Cobalt Chloride Paper is used to detect water. In biology classes it mainly serves to compare transpiration from the upper and lower surfaces of a leaf, and to confirm that droplets or a colourless liquid collected during an experiment are water.
How does Cobalt Chloride Paper show that water is present?
Cobalt Chloride Paper shows water through a colour change: papers of this type are conventionally blue when dry and turn pink when they absorb moisture. Comparing a test strip with a fresh dry strip makes the change easy for students to judge.
What exactly is Cobalt Chloride Paper impregnated with?
Cobalt Chloride Paper is catalogued under this name, but its exact composition is not listed on this page. If your institution needs it confirmed, or specifically wants a cobalt-free moisture paper, contact us before ordering and we will advise.
How many strips come in a pack of Cobalt Chloride Paper?
The pack format of Cobalt Chloride Paper is not listed on this page, so please ask for current pack details when you request a quotation. Tell us how many classes will run the practical so the quantity can be matched to your needs.
How should Cobalt Chloride Paper be stored and reused?
Cobalt Chloride Paper should be kept in a dry, closed container or desiccator so that humidity does not change its colour before use. Strips of this type can usually be dried until the blue returns and used again; replace any that stay patchy.
Who supplies Cobalt Chloride Paper?
Cobalt Chloride Paper is supplied by Jain Scientific Equipments Pvt Ltd, which trades as ScienceLab from Ambala, Haryana, India. The company offers it with slides, desiccators and reagents for transpiration practicals to schools, colleges and distributors in India and international markets.
Request a Quote
For Cobalt Chloride Paper (SCL378/094), send your requirement through the contact page or add it to the enquiry cart to receive a quotation with pack details.
Last updated: 24 September 2026
