Best Lab Petri Dishes Under $50 (2026)

We ranked products under $50 by a value score combining material, diameter options, sterility, pack size, and average user rating

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Buying Guide

Choose material by application

Borosilicate glass dishes (e.g., 120mm glass) tolerate heat and repeated sterilization, while plastic dishes are low-cost and disposable for one-time assays

Match dish diameter to protocols

Common sizes include 60mm, 90mm and 120mm; select the diameter your workflow and incubator space require to ensure compatibility

Sterile vs non-sterile packaging

Sterile-packaged dishes reduce contamination risk for microbiology work — look for individually or batch-sterilized labeling when aseptic conditions matter

Consider pack size and storage

Large multipacks (hundreds of 60mm dishes) lower per-unit cost but need adequate storage and date rotation; small packs of glass are easier to store and reuse

Check lid fit and clarity

Secure, well-fitting lids minimize evaporation and contamination; clear lids improve plate reading and imaging without opening the dish