The Bulb Holder Hanging Type (Product Code: SCL-644/070) is a hanging lamp holder intended for the ionic conductivity demonstration, in which a glowing bulb shows whether a solution conducts electricity. It is waterproof, leakproof and resistant to high temperature, and it is sealed by a hermetic process rather than the ordinary rubber-cap seal found on general holders — useful on a bench where beakers of electrolyte are close at hand. Chemistry teachers use it as part of a chemistry teaching kit for electrolytes and non-electrolytes. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala.
| Parameter | Detail |
|---|---|
| Type | Hanging bulb holder |
| Application | Ionic conductivity demonstration |
| Sealing | Hermetically sealed processing (not general rubber-cap sealing) |
| Protection | Waterproof, leakproof |
| Heat | High temperature resistance |
| Design aim | Long life and secure use |
In the classic conductivity demonstration the holder and bulb are wired in series with a switch and a pair of electrodes. The electrodes are dipped in turn into distilled water, sugar solution, common salt solution, dilute acid and dilute alkali: the bulb lights brightly for strong electrolytes, glows dimly for weak ones such as dilute acetic acid, and stays dark for non-electrolytes. The hanging design lets the lamp be suspended at eye height where the whole class can see it change.
This demonstration should be set up and run by the teacher. Switch off and disconnect the supply before moving or rinsing the electrodes, never touch the electrodes or the solution while the circuit is live, keep hands and the bench dry, and rinse the electrodes with distilled water between solutions so results are not carried over.
The holder is supplied by Jain Scientific Equipments Private Limited, trading as ScienceLab from Ambala, Haryana, India. Buyers completing vendor registration forms can use the company's GST number, GSTIN 06AAECJ8618A1ZT, and its global Legal Entity Identifier, 3358004HRD1JIVXKYX49. The company profile has further details.
Components for building the conductivity circuit:
More electrochemistry apparatus is listed in the Chemistry Lab category.
Which bulb fitting does the holder take?
The lamp cap type is not stated in our current listing. Please contact us with the bulb you plan to use so we can confirm compatibility.
Is a bulb included?
A bulb is not listed with this holder. Bulbs are offered separately, for example the Electric Bulb.
What is the advantage of hermetic sealing?
The holder is sealed by a hermetic process instead of a conventional rubber cap, which is why it is described as waterproof and leakproof — a benefit when solutions are handled nearby.
What are the current and voltage ratings?
Electrical ratings are not given in this listing; confirm them with us before connecting the holder to your supply.
Can students operate the conductivity set-up themselves?
We recommend that the teacher wires and switches the circuit, with students observing and recording the results, because the electrodes and solutions form part of a live circuit.
Can you supply complete conductivity sets for several schools?
Yes. Holders, bulbs, switches, wire and electrodes can be quoted together for institutions and distributors in India and international markets.
For pricing on the Bulb Holder Hanging Type, send an enquiry or add it to the enquiry cart with the other circuit parts.
Last updated: 24 September 2026