Komax · Food Storage Containers
Komax Biokips Food Storage Containers - 20lb Airtight Bins With Lids & Scooper, BPA Free Kitchen Pantry Organization
Lower-concern food storage choice, but brand transparency on materials is absent.
Komax Biokips containers are rigid plastic food-storage bins without nonstick or water-resistant coatings, making them lower PFAS concern than treated items. The BPA-free claim addresses one plastic concern but doesn't address PFAS in the resin or manufacturing.
Shop Komax on Amazon →Material
Plastic (likely polypropylene or polycarbonate) with airtight lids
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Komax Biokips are injection-molded plastic, almost certainly polypropylene (PP, #5 resin code), a food-grade thermoplastic chosen for its rigidity and airtight-seal compatibility. Polypropylene is chemically stable at room temperature and does not leach BPA or phthalates under normal pantry storage. The lids likely contain a rubber or silicone gasket to maintain the seal; gasket material quality varies by manufacturer and affects long-term airtightness and odor retention.
The brand's record and disclosure
Komax is a mid-tier kitchen plastics brand with minimal public transparency on material sourcing, manufacturing standards, or third-party certifications. The 'BPA Free' label is standard marketing for food-storage products in this price range and does not differentiate safety. No significant recalls, lawsuits, or safety controversies are on record for Komax food containers. The brand does not publish formal statements on chemical testing, phthalate avoidance, or sustainability practices.
How it compares in its category
Polypropylene food storage is one of the safer bulk-storage material choices, preferred by public health agencies over polycarbonate (which may contain BPA analogs). Komax's price point and feature set (airtight seals, scooper, multiple sizes) are competitive with OXO, Rubbermaid Brilliance, and store brands; those brands often publish more detailed material disclosures. Glass alternatives (Pyrex, Anchor Hocking) eliminate plastic leaching risk entirely but cost more and break easily.
If you buy it
Store dry goods only at room temperature; avoid prolonged contact with hot foods or repeated microwave heating, which can soften PP and degrade gasket seals over time. Inspect lids and seals annually for cracking, cloudiness, or permanent odor, which signal breakdown; replace worn gaskets if replacements are available. Hand-wash in cool water rather than dishwasher if possible to extend lid life. Do not store fatty or acidic foods (oils, vinegars, citrus juice) long-term, as these may interact with gasket materials.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
BPA and related bisphenols
Komax explicitly markets containers as BPA-free. Polypropylene does not contain bisphenol-A in its polymer backbone; no credible reports of BPA leaching from PP food storage. Claim is consistent with material chemistry.
Phthalate plasticizers
Polypropylene is inherently rigid and does not require phthalate plasticizers. Food-contact PP resins used in major appliance lines are typically phthalate-free by design. No evidence of phthalate addition in Komax containers.
Microplastic shedding during use and heating
Polypropylene is durable for cold storage but can degrade at temperatures above 120C (248F) or under prolonged microwave exposure, potentially releasing microplastic particles into food. Risk is low if used as designed (room-temperature dry storage), but high if repurposed for hot foods or repeated heating cycles.
Gasket material degradation and mold growth
Rubber or silicone gaskets can harbor moisture and mold if containers are not fully dried before sealing or if stored in humid environments. Poor gasket maintenance may also trap moisture against food, increasing spoilage risk independent of chemical safety.
Colorants and pigments in plastic
Food-contact pigments in polypropylene containers are regulated by FDA (21 CFR 178) and do not typically contain cadmium or heavy metals in certified resins. No specific testing results available for Komax brand, but no recalls or contamination reports exist for this product line.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Food Storage Containers
Caraway
Food Storage Set
Glass containers with plastic lids
Lower concern; glass + plastic lids with stated PFAS-free position, but no third-party verification of lid material.
⚠Risky category by default
Caraway
Home 9-Piece Mini Food Storage Set
Borosilicate glass containers with plastic lids
Lower-concern option; glass containers avoid PFAS coatings, but verify lid material before purchase.
⚠Risky category by default
Caraway
Cream 6.6-Cup Non-Stick Glass Food Storage Container with Lid
borosilicate glass with non-PFAS lid
Lower PFAS concern, glass container with stated non-PFAS lid, though third-party verification absent.
⚠Risky category by default
More food storage containers grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.