Gosselin™ BP124-05 Square Petri Dish, 120 × 120 mm, 4 Vents, Sterile — 14/Bag, 252/Case

Product Description

The Gosselin™ BP124-05 is a 120 × 120 mm square sterile petri dish — crystal polystyrene, 4 vents, slippable design, optimal flatness, sterile, and suitable for a wide range of microbiology, environmental, food and beverage testing, pharmaceutical quality control, and life sciences applications. 14 dishes per bag, 252 dishes per case (18 bags per case). Catalog # BP124-05.

Square Format — Maximized Growth Surface for High-Throughput Plating The 120 × 120 mm square format of the Gosselin™ BP124-05 provides significantly more growth surface area than a standard 100mm round Petri dish — the square footprint maximizes the usable agar surface area within the same footprint occupied by a round dish, accommodating more colonies, larger spreading areas, and higher-density plating for enumeration, isolation, and screening workflows. For environmental and water testing, food and beverage plate counts, pharmaceutical QC sampling, and any microbiology application where maximizing colony count or isolation efficiency per dish is a priority, the 120 × 120 mm square format delivers a meaningfully larger working surface.

120 × 120 mm — The Standard Square Petri Dish Format The 120 mm square format of the BP124-05 is the most widely used square Petri dish size in environmental monitoring, food safety testing, and pharmaceutical QC — matching the footprint of standard square dish incubation racks, colony counters, automated plate readers, and plate scanning systems designed for the 120mm square format. At approximately 120.5 mm across and 15.8 mm in height, the BP124-05 is compatible with all standard 120mm square dish handling and reading equipment.

4 Vents — Controlled Gas Exchange for Optimal Colony Growth The four vents of the BP124-05 provide controlled gas exchange between the dish interior and the incubation environment — allowing CO₂ and O₂ exchange required for aerobic microbial growth while limiting moisture loss and preventing excessive condensation on the dish lid. The 4-vent design is the standard vent configuration for square dishes used in environmental monitoring and food testing where extended incubation periods require controlled headspace gas exchange without desiccation of the agar surface. The vented design also helps prevent lid lifting and condensation drip — a common problem in high-humidity incubator environments that can cause colony spreading and counting errors.

Slippable Design — Easy Lid Removal and Replacement The slippable lid design of the BP124-05 allows smooth, easy one-handed removal and replacement of the lid during plating, sampling, and colony picking operations — without the resistance or sticking that can occur with tight-fitting lid designs. The slippable design is especially valuable in high-throughput plating workflows where dishes are opened and closed rapidly in succession, and in laminar flow cabinet environments where smooth, controlled lid handling is required to maintain sterility.

Optimal Flatness — Consistent Agar Depth for Quantitative Applications The optimal flatness of the BP124-05 base ensures consistent agar depth across the entire 120 × 120 mm growth surface — critical for quantitative enumeration methods including TEMPO, spiral plating, and automated colony counting where uneven agar depth causes counting errors. The flat base also provides stable, non-rocking placement on laboratory benches, incubator shelves, and automated handling equipment — preventing the dish tilting that causes agar meniscus effects in dishes with bowed or non-flat bases.

Crystal Polystyrene — Exceptional Clarity for Colony Inspection Crystal polystyrene construction provides superior optical clarity compared to standard general-purpose polystyrene — enabling direct visual inspection of colonies through the dish base without opening the lid. For colony morphology assessment, automated optical colony counting, and any application requiring clear bottom inspection of plate contents, the crystal polystyrene construction of the BP124-05 provides the clearest possible view of the agar surface and colonies from below.

Sterile — Gamma Irradiation or EO Validated Sterility The BP124-05 is supplied sterile — validated for use in all microbiological applications requiring sterile plating vessels. Individual bag packaging (14 dishes per bag) maintains sterility until use while allowing partial bag use without compromising the sterility of remaining dishes in the bag.

Broad Application Compatibility The Gosselin™ BP124-05 is specifically validated for use in four major application areas:

• Environmental and Water Testing — ISO and EPA standard methods for environmental monitoring, water quality testing, and air sampling require square petri dishes in the 120mm format for spread plate and membrane filtration methods
• Food and Beverage Testing — AOAC, ISO, and FDA BAM plate count methods for food safety testing including total viable count (TVC), yeast and mold counts, and pathogen screening use square dishes for higher-throughput plating
• Pharmaceutical Quality Control — USP and EP sterility testing, environmental monitoring, and bioburden testing methods specify square dish formats for specific plate count and environmental monitoring sampling procedures
• Life Sciences — general microbiology research, bacterial genetics, phage assays, mutagenesis screening, and any life sciences application where increased plating surface is required

Packaging — Individual Bags for Sterility Maintenance 14 dishes per bag / 252 dishes per case (18 bags). The individual bag packaging of the BP124-05 maintains the sterility of each subset of dishes independently — allowing labs to open one bag of 14 dishes at a time while the remaining bags in the case remain sterile and sealed. This packaging format is specifically designed for the laboratory workflow where dishes are consumed in small batches rather than all at once — preventing the sterility compromise and particulate contamination that would occur if all dishes in a case were exposed simultaneously.

Compatible Replacement — Cross-Reference Guide

The Gosselin™ BP124-05 is a comparable alternative to square petri dishes from several major manufacturers:

• Thermo Fisher Nunc™ OmniTray™ — square cell culture dish, 120 × 120 mm
• Greiner Bio-One 688102 — square Petri dish, 120 × 120 mm, vented, sterile
• Sarstedt 82.9923 — square Petri dish, 120 × 120 mm, vented, sterile
• VWR® 25384-326 — square Petri dish, 120 × 120 mm, vented, sterile

Competitor brand names and catalog numbers are referenced for cross-referencing purposes only. Compatibility should be verified for your specific application and protocol.

Key Features

• Gosselin™ Square Petri Dish — Catalog # BP124-05
• 120 × 120 mm square format — maximized growth surface area
• Footprint: 120.5 mm (approx.) × 120.5 mm (approx.)
• Height: 15.8 mm (approx.)
• Crystal polystyrene — exceptional optical clarity
• 4 vents — controlled gas exchange for optimal colony growth
• Slippable lid design — smooth one-handed operation
• Optimal flatness — consistent agar depth for quantitative enumeration
• Sterile — validated sterility for microbiological applications
• Suitable for environmental and water testing, food and beverage testing, pharmaceutical QC, life sciences
• Individual bag packaging — 14 dishes per bag maintain sterility until use
• Manufactured with renewable energy
• 252 dishes per case (18 bags of 14)

Supported Applications Environmental monitoring — air, surface, and water sampling by spread plate and membrane filtration methods, food and beverage total viable count (TVC), yeast and mold enumeration, pathogen screening, pharmaceutical environmental monitoring (USP/EP), bioburden testing, sterility testing, bacterial genetics and mutagenesis screening, phage overlay assays, bacteriophage plaque assays, spiral plating and automated colony counting, ISO standard plate count methods, EPA standard method plate counts, and any microbiology or life sciences application requiring a 120 × 120 mm sterile square Petri dish with vented slippable lid and optimal flatness.

Technical Specifications