Source transparent 90mm petri dish for labs, schools, and clinics

Strategic Sourcing Guide for Transparent 90mm Petri Dishes

Understanding Technical Specifications and Material Standards

When sourcing transparent 90mm petri dishes, the primary objective is to identify products that meet rigorous dimensional and material consistency requirements. The core specification for this category centers on the diameter, which is frequently cited as 90mm in standard laboratory contexts. However, procurement data indicates that manufacturers often produce variations in dimensions, with observed standard sizes including 35mm, 60mm, 70mm, 90mm, and 150mm. Buyers must verify that the specific unit ordered matches the 90mm diameter requirement, as some listings may reference a standard of 90 * 15mm, indicating the diameter alongside the height or depth.

Material composition is the second critical technical factor. The supplied facts confirm that the primary material for these dishes is plastic. Specifically, some high-grade options are noted to have a chemical composition where SiO2 (silicon dioxide) is more than 99.99%, suggesting a high-purity glass or specialized polymer blend, though the general category is broadly classified as plastic. The visual characteristic is consistently described as transparent or clear, ensuring that laboratory personnel can easily observe microbial growth or cell cultures without obstruction. The color attribute is uniformly listed as transparent or clear, with some variations noting a "transparent color" for the cap.

Surface quality is another vital technical specification. The manufacturing process should result in a surface free of bubbles and air lines, which can interfere with observation and sample integrity. Some suppliers offer surface treatments such as polishing, grinding, or frosting, which may be relevant for specific experimental needs, though the standard requirement for a 90mm dish is typically a smooth, clear surface. The weight of the product is also a variable; observed data suggests weights around 12g or 14g, which can influence shipping costs and handling requirements. Buyers should request specific weight data for the 90mm variant to ensure it aligns with their logistical planning.

Compliance, Certification, and Sterility Protocols

In the laboratory environment, compliance with international standards is non-negotiable. The sourcing guide must prioritize products that carry recognized certifications. Data indicates that ISO and CE certifications are available for petri dishes in this category. These certifications suggest that the manufacturing facility adheres to specific quality management systems and European safety standards, respectively. However, buyers should not assume that every listed product possesses these certifications; verification of the specific batch or model number is essential.

Sterility is a paramount concern for applications involving cell culture or microbiology. The product attributes explicitly mention "Eo Sterile" (Ethylene Oxide Sterile) as an available option. This indicates that the dishes have undergone a sterilization process to eliminate biological contaminants. For applications requiring absolute sterility, the presence of this certification is mandatory. Additionally, the availability of "Dnase/Rnase Free" attributes is a critical differentiator for molecular biology applications. If the intended use involves RNA or DNA extraction, the buyer must confirm that the specific 90mm dish is certified free of these nucleases to prevent sample degradation.

The standard of the product is often defined by its dimensions and packaging. Observed standards include 90 * 15mm, 60mm/90mm/150mm, and 3515mm, 6015mm, 7015mm, 9015mm. These variations highlight the need for precise specification matching. Furthermore, the origin of the product is a key compliance factor. The majority of the observed data points to China, with specific mentions of Jiangsu as a manufacturing hub. While this location is a major production center, buyers should ensure that the supplier can provide valid documentation proving the origin and compliance status, rather than relying solely on general market assumptions.

Cost Drivers and Pricing Dynamics

The pricing structure for transparent 90mm petri dishes is influenced by several dynamic factors. The observed listed price range in the market spans from $0.03 to $25 USD. This wide variance suggests that price is not solely a function of the product's physical dimensions but is heavily dependent on material quality, sterility status, and packaging requirements. A unit priced at $0.03 likely represents a non-sterile, bulk plastic dish with minimal packaging, whereas a unit at $25 may include advanced features such as EO sterilization, Dnase/Rnase-free certification, and specialized export packaging.

Minimum Order Quantity (MOQ) is another significant cost driver. The observed MOQ range is extensive, spanning from 2 pieces to 50,000 pieces. Some suppliers offer an MOQ as low as 2 pieces, which is beneficial for small laboratories or research teams requiring samples. Conversely, other suppliers set an MOQ of 100 pieces or higher. The "Sample for Free" attribute is frequently available, allowing buyers to test product quality before committing to a larger order. However, the cost of shipping for these samples or small orders can sometimes offset the savings from a low MOQ.

Packaging methods also impact the final cost. The data lists various packing options, including "Case," "Export Package," "Carton," and specific configurations like "10PCS/Bag, 500PCS/CTN." Bulk packaging in cartons or cases generally reduces the per-unit cost but requires higher upfront investment. Buyers must calculate the total landed cost, including the unit price, MOQ constraints, and shipping fees, to determine the most economical procurement strategy. The lead time, observed as 5 days for small cargo and 5-10 days for large cargo, also affects inventory planning and potential rush fees.

Typical Applications and Functional Requirements

The primary application for transparent 90mm petri dishes is in laboratory settings, specifically for microbiology, cell culture, and general scientific research. The keyword "Petri Dish" and the application tag "for lab" confirm this usage. The 90mm size is a standard medium-sized dish, offering a balance between surface area for growth and manageable handling. It is suitable for culturing bacteria, fungi, and other microorganisms where a moderate growth area is required.

The transparency of the dish is crucial for visual inspection. Whether observing colony formation, measuring growth rates, or performing microscopic analysis, the clear material allows for unobstructed viewing. The "Vent" attribute, noted as "1 Vent" in some specifications, suggests that certain models are designed to allow gas exchange, which is beneficial for aerobic cultures. However, not all 90mm dishes may include this feature, so buyers must verify if their specific application requires a vented lid.

For molecular biology applications, the "Dnase/Rnase Free" attribute is a functional requirement rather than a mere specification. If the dish is used in procedures involving nucleic acids, the absence of these enzymes is critical to prevent the degradation of samples. Similarly, the "Sterile" attribute is essential for any application where contamination could compromise experimental results. The "Disposable" attribute indicates that these dishes are intended for single-use, which is standard practice in modern laboratories to prevent cross-contamination between samples.

Supplier Evaluation and Origin Verification

Evaluating suppliers for transparent 90mm petri dishes requires a careful assessment of their capabilities and reliability. The observed data indicates that many suppliers are located in Jiangsu, China, a region known for its manufacturing infrastructure. However, the presence of a location tag does not guarantee quality. Buyers should verify the supplier's production capacity, quality control processes, and ability to meet specific customization requests.

The "Customization" attribute is available, suggesting that suppliers can modify dimensions, packaging, or material properties to suit specific needs. This flexibility is valuable for large-scale procurement or specialized research projects. However, customization often comes with higher MOQs and longer lead times. Buyers should assess whether the supplier can accommodate their specific volume requirements without compromising on quality.

Model numbers such as JERT55, DFDF23442, 1177, TYE04, and TYE101-113 are observed in the market. These identifiers help in tracking specific product lines and ensuring consistency across orders. When evaluating a supplier, buyers should request detailed specifications for these model numbers to confirm they meet the 90mm diameter and other technical requirements. Additionally, the "Brand Name" attribute, such as "HB," can be a factor in brand recognition and trust, though generic suppliers may also offer high-quality products.

Quality Control and Long-Term Procurement Considerations

Quality control is the final pillar of a successful sourcing strategy. The observed process attributes, such as "no bubble, no airline," indicate that manufacturers should have strict quality control measures in place. Buyers should request quality assurance reports or certificates of analysis (COA) to verify that the products meet these standards. The "Sample Time" of 1-3 days allows for rapid testing of product quality before placing a large order.

Long-term procurement considerations involve building a sustainable relationship with suppliers. The "Delivery Time" of 5-10 days for large cargo suggests that suppliers can handle regular orders efficiently. However, buyers should plan for potential supply chain disruptions and maintain a buffer stock. The "Single package size" of 25X22X20 cm and the "Mesh Size" of 200 Mesh (75μm) for certain components highlight the need for precise logistics planning.

Buyers should also consider the environmental impact of their procurement. The "Disposable" nature of the dishes means that waste management is a factor. Some suppliers may offer recyclable packaging or eco-friendly materials, which could be a differentiator in the market. Finally, the "Chemical Composition" of SiO2 being more than 99.99% in some products suggests a high level of purity, which should be verified for applications requiring extreme chemical resistance.

Comparative Analysis of Product Attributes

To facilitate decision-making, the following table summarizes key attributes observed in the market for transparent 90mm petri dishes. This comparison helps buyers identify the most suitable options based on their specific needs.

This table serves as a reference for buyers to quickly assess the variability in the market and make informed decisions based on their specific requirements. By focusing on these key attributes, buyers can navigate the complex landscape of petri dish sourcing and secure high-quality products that meet their laboratory needs.