Petri Dish Glass 4” (Anumbra)

Product Code : SCL-CLE-11952

The Anumbra 4-inch (100mm) Glass Petri Dish is a premium, optically clear vessel engineered for the cultivation of microorganisms, tissue culture, and sample observation. Unlike standard soda-lime glass, Anumbra glassware is renowned for its high surface planarity and superior transparency, which are critical for microscopic analysis. The 100mm diameter is the international standard for microbiology, providing ample surface area for colonial isolation while remaining compatible with standard incubator shelving and automated plate counters.

Technical Specifications

Key Pedagogical & Laboratory Outcomes

• Cultivation Interface: Facilitates student understanding of Aseptic Technique and Microbial Growth. Learners identify how the overlapping lid allows for gas exchange while preventing the entry of airborne contaminants.
• Morphological Application: Enables high-resolution Colonial Analysis; the superior optical clarity of Anumbra glass allows learners to apply magnifying lenses or stereo-microscopes to observe edge morphology and elevation without glass-induced distortion.
• Thermodynamic Analysis: Supports the analysis of "Agar Solidification"; the high thermal stability allows students to evaluate the pouring of hot media (50–60?C) without the risk of thermal fracture common in low-grade glass.
• Isolation Evaluation: Provides a platform for evaluating the "Quadrant Streak" method; the perfectly flat base ensures that the agar depth is consistent, preventing the "puddling" of media that can interfere with the isolation of pure colonies.

Why Anumbra Glass Over Plastic?

While disposable plastic dishes are common, the Anumbra glass series is preferred for:

1. Sustainability: Reusable hundreds of times, significantly reducing laboratory plastic waste.
2. Chemical Resistance: Immune to the "fogging" or "crazing" caused by certain solvents, stains, or fixatives.
3. Microscopic Precision: The base of an Anumbra dish is precision-ground to be flatter than molded plastic, ensuring the specimen remains in focus across the entire field of view.

International Logistics & Compliance

StemAids ensures comprehensive OEM readiness for global institutional procurement:

• Packaging: Export-grade, high-protection packaging. Glass Petri dishes are exceptionally fragile; they are nested in custom-molded shock-absorbent trays and double-boxed to ensure "zero-breakage" during maritime or air transit.
• Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Quality (CoQ), and sterilization compatibility reports.
• Durability: Every dish undergoes a specialized annealing process to remove internal stress, ensuring the rims do not chip easily during the high-turnover environment of school laboratories.

Direct OEM Sourcing Advantages

Procuring Anumbra Petri Dishes directly ensures vertical manufacturing control:

• Surface Planarity Control: Direct oversight of the glass-molding process ensures the base is free of "waves" or "ripples" that affect agar depth and microscopic clarity.
• Consistent Lidding: We ensure the lid-to-base clearance is optimized to maintain humidity while still allowing for the aerobic respiration of cultures.
• Direct Factory Inventory: Guaranteed availability of the standard 4” size, as well as specialized 60mm (small) and 150mm (large) variants.
• Quality Assurance: Every batch is "clarity-tested" against photographic standards to ensure it meets the Anumbra benchmark for distorted-free viewing.