Preparatory Needle
Product Code : SCL-CL-11924
Preparatory Needle (SKU SCL-CL-11924), known in most labs as a dissecting needle or teasing needle, is a 14 cm straight metal needle for manipulating, separating and positioning delicate specimens. Students use it during dissections and when preparing microscope slides in school biology and college botany and zoology practicals. Science Lab Supplies supplies it from its Ambala, India base to schools, colleges, training institutes, tender contractors and distributors.
Specifications
The needle is a straight, slender metal tool 14 cm long with a sharp, pointed tip. The tip lets the user untangle minute tissues and probe small structures under a microscope, while the long shaft gives control when pressing a coverslip gently onto a slide.
| Parameter | Value |
|---|---|
| SKU | SCL-CL-11924 |
| Model no. | SCI/LSS-1668 |
| Material | Metal |
| Length | 14 cm |
| Form | Straight needle with sharp pointed tip |
| Use | Teasing, separating and positioning specimens |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Preparatory Needle
The needle is used to tease apart fine tissues, spread a specimen evenly in a drop of stain or water and lower a coverslip onto a slide at an angle so that trapped air bubbles are pushed out. Clear, bubble-free mounts make microscope observation much easier for students.
- Class 9–10 biology: preparing onion peel and cheek cell slides for the microscope.
- Class 11–12 biology: separating floral parts and teasing out tissues during dissection.
- B.Sc. botany and zoology practicals: spreading specimens for temporary mounts.
- Lowering coverslips to remove air bubbles before observation.
The tip is sharp, so store the needle point-down or capped and use it under supervision.
Standard Scope of Supply
The Preparatory Needle is supplied as a single unit as described above; pack quantities and any optional accessories appear on the quotation.
Packing, MOQ and Lead Time
Needles are normally bought for every microscope bench or dissection group. The quotation you request states packing, delivery time and price for that number, and slides, cover glasses or other school chemistry lab equipment in India can be included in the same enquiry.
Science Lab Supplies is able to ship to buyers in Nigeria, Kenya, Ghana, Ethiopia, Tanzania and Uganda as a registered exporter with an Importer-Exporter Code. Science Lab Supplies is registered for GST (GSTIN 06ADEPJ0574F2ZU). Enquiries can be sent from the contact page or the enquiry cart; our lab tender page covers bulk tenders.
Frequently Asked Questions
What is a preparatory needle used for?
It is used to manipulate, separate and position delicate specimens during dissection and slide preparation, and to lower coverslips so that air bubbles are pushed out.
How long is the needle?
It is 14 cm long, a straight metal needle with a sharp, pointed tip that gives good control under a microscope or hand lens.
Who supplies the Preparatory Needle?
Science Lab Supplies supplies it from Ambala, India, for schools, colleges and contractors, and quotes it alongside forceps, scalpels and slides.
Is it the same as a dissecting needle?
Yes, the preparatory needle is a straight dissecting or teasing needle used for handling fine specimens and preparing slides.
Related Slide Preparation and Dissection Items
Slide preparation needs a few simple tools used together. The four items below from the Chemistry Lab range cover mounting, handling and viewing specimens, so a biology lab can equip its microscope benches and request everything on one quotation.
- Glass Microscope Slides — the slides on which specimens are mounted.
- Cover Glasses — lowered onto the slide with the needle.
- Forceps — for lifting specimens onto the slide.
- Compound Biological Microscope — for examining the finished mount.
See the full Chemistry Lab range or browse all school lab equipment.
Last updated: 25 September 2026
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