Antibiotic Multi‑Test Discs – Pack of 50 (Gram Negative)

The Antibiotic Multi‑Test Discs Pack of 50 (Gram Negative) is a high‑value microbiology resource designed for repeated use in educational laboratories. Supplied as convenient multi‑disc rings, this larger pack size is ideal for schools and colleges delivering multiple classes or extended investigations into antibiotic sensitivity and bacterial growth.

Each systematic Gram‑negative ring contains a carefully selected range of commonly studied antibiotics. When used with standard agar diffusion techniques, students can clearly observe and compare zones of inhibition, supporting understanding of how different antibiotics affect Gram‑negative bacteria. The multi‑test ring format ensures consistent placement and reliable comparative results.

This pack of 50 offers excellent economy for busy biology departments, enabling repeated demonstrations and hands‑on investigations while reinforcing safe laboratory technique and data interpretation skills.

Antibiotics Included

• AP – Ampicillin 10 µg
• KF – Cephalothin 5 µg
• CO – Colistin Sulphate 25 µg
• GM – Gentamicin 10 µg
• S – Streptomycin 10 µg
• ST – Sulphatriad 200 µg
• T – Tetracycline 25 µg
• TS – Cotrimoxazole 25 µg

Key Features

• Pack of 50 Gram‑negative multi‑test disc rings
• Includes 8 widely studied antibiotics
• Designed for systematic antibiotic sensitivity testing
• Clear comparison of zones of inhibition
• Convenient ring format for consistent results
• Ideal for high‑usage educational laboratories
• Excellent value for schools and colleges

Ideal for School & College Biology Lessons

Ideal for GCSE, A‑Level, and introductory microbiology courses, these Gram‑negative antibiotic multi‑test discs allow students to investigate real‑world issues such as antibiotic effectiveness and resistance through practical, observation‑based learning.

• Investigating antibiotic action on Gram‑negative bacteria
• Demonstrating agar diffusion techniques
• Comparing the effectiveness of multiple antibiotics
• Supporting discussions on antimicrobial resistance
• Developing core microbiology practical skills

Comprehensive, cost‑effective, and curriculum‑relevant, the Antibiotic Multi‑Test Discs Pack of 50 for Gram‑negative bacteria is an essential resource for delivering high‑quality microbiology education in school and college laboratories.