Kit for Demonstration of CO2 Emission and Heat Production in Germinating Seeds
Product Code : SCL-BLE-11620
Kit for Demonstration of CO2 Emission and Heat Production in Germinating Seeds (SKU SCL-BLE-11620) is a glassware set that shows two signs of respiration at once: carbon dioxide turning baryta water cloudy and a rise in temperature among germinating seeds. It includes flasks, stoppers, silicone tubes, a thermometer, baryta water and an aspiration pump, for Class 10–11 biology and B.Sc. plant physiology. Supply comes from Science Lab Supplies in Ambala, India, which can deliver this glassware set to schools, colleges, training institutes, tender contractors and distributors.
Specifications
Each piece of the CO2 and heat respiration kit is listed with its size or count below. In short, it combines two 250 ml Erlenmeyer flasks, a 500 ml spherical flask with three nozzles, stoppers and silicone tubing, a 0–100 °C thermometer, a bottle of baryta water and a three-valve aspiration pump.
| Specification | Value |
|---|---|
| SKU | SCL-BLE-11620 |
| Erlenmeyer flasks | 2 x 250 ml |
| Silicone tubes | 1 pair, with 2-hole rubber stoppers |
| Single-hole rubber stopper | 1 |
| Spherical flask | 500 ml glass, with three nozzles |
| Thermometer | 0–100 °C |
| Baryta water | 1 bottle (barium hydroxide solution) |
| Aspiration pump | 1, three-valve |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the CO2 and Heat Production Kit
Germinating seeds placed in the three-nozzle flask release carbon dioxide and heat; the aspiration pump draws their air through baryta water, which turns milky, while the thermometer records the temperature rise. The kit suits respiration practicals in NCERT Class 10 and Class 11 biology and B.Sc. plant physiology.
- Class 10 biology: proving that respiration releases carbon dioxide, with a control flask of boiled seeds connected through spare Borosilicate Conical Flask glassware.
- Class 11 biology: showing that respiration releases energy as heat by comparing thermometer readings over several hours.
- B.Sc. plant physiology: extending the set-up with extra Rubber Stoppers of Various Diameters with Holes to test different seed types side by side.
Baryta water is a barium hydroxide solution, which is toxic and corrosive; it should be handled only under supervision, with gloves and eye protection. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.
Standard Scope of Supply
The kit contains two 250 ml Erlenmeyer flasks, a pair of silicone tubes with 2-hole rubber stoppers, one single-hole rubber stopper, a 500 ml spherical glass flask with three nozzles, a 0–100 °C thermometer, a bottle of baryta water and one three-valve aspiration pump. Seeds are not included.
Packing, MOQ and Lead Time
Enquiries can cover one kit for a demonstration or several for group practicals. The quotation lists the price for that quantity with its packing and delivery time, and spare baryta water, stoppers or flasks can be requested on the same quotation.
Science Lab Supplies holds an Importer-Exporter Code, so it can ship to buyers in Tanzania, Uganda, the UAE, Saudi Arabia, Oman and the Philippines. Science Lab Supplies is registered for GST (GSTIN 06ADEPJ0574F2ZU). Schools looking for a biology lab equipment supplier in India can raise a query on the contact page, gather a basket in the enquiry cart, or see the lab tender page for bidding.
Frequently Asked Questions
How does the kit show carbon dioxide emission?
The three-valve aspiration pump draws air from the flask of germinating seeds through baryta water. Carbon dioxide reacts with the barium hydroxide to form a white precipitate, so the liquid turns milky.
How is heat production measured?
The 0–100 °C thermometer is fitted through a stopper into the flask of germinating seeds, and its reading is compared over time with a control of boiled seeds, which show no temperature rise.
Who supplies this CO2 and heat production kit?
Science Lab Supplies supplies it from Ambala, India, quoting single kits or group quantities for schools, colleges and distributors, with replacement baryta water available on the same order.
Related Seed and Plant Physiology Kits
These items from the Biology Lab Equipment and Lab Chemicals ranges cover respiration, breathing, mineral absorption and photosynthesis, plus the reagent and thermometers this kit draws on, so a complete plant physiology bench for the class can be quoted in one request.
- Germinating Seed Respiration Demonstration Kit — two bottles of dye with capillary glass tubes, a stand and KOH.
- Plant Respiration Demonstration Kit — 85 mm metal ring with clamp on a 500 mm tripod rod.
- Aquatic Plant Respiration Demonstration Kit — funnel and test tube for showing oxygen given off during photosynthesis.
- Kit for the Demonstration of Absorption of Mineral Salts in Plants — mineral salt with two 250 ml Erlenmeyer flasks.
- Kit for Experiments with Breathing — lung model and lime water for revealing carbon dioxide in exhaled air.
- Barium Hydroxide — alkaline barium reagent for supervised laboratory work.
- Laboratory Thermometers — graduated glass alcohol thermometers for −10 to 100 °C.
Browse the Biology Lab Equipment range, the Lab Glassware range, or all school lab equipment.
Last updated: 9 October 2026
