Komax · Food Storage Containers
Komax Biokips Food Storage Lunch Container Dividers
Lower-concern lunch dividers; no PFAS risk signals, but brand offers no reassurance.
Komax Biokips dividers are simple polypropylene insert pieces, a non-coated, non-treated plastic with no documented PFAS risk. The brand makes no PFAS claims and offers no third-party verification, but the product category (rigid food dividers, not non-stick or water-resistant coatings) carries minimal PFAS concern.
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Polypropylene (PP) food container dividers
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 dividers are polypropylene (PP, resin code 5), a thermoplastic polymer chosen for food contact because it resists moisture and does not typically leach plasticizers at room temperature. PP is inert at refrigerator and room temperatures and has no known BPA or phthalate content by design; however, all plastics can degrade if subjected to high heat, prolonged UV exposure, or acidic/fatty foods. These dividers are intended as drawer inserts and compartment separators, not as direct heated cookware, which substantially lowers chemical migration risk.
The brand's record and disclosure
Komax is a privately held kitchenware manufacturer with no major safety recalls associated with Biokips lunch containers in public databases. The brand does not publicly disclose material sourcing, third-party testing (NSF, FDA compliance letters), or PFAS avoidance statements. No formal certifications (e.g., BPA-free labeling, California Prop 65 warnings) are documented for this product line. Absence of disclosure does not indicate a problem, but it reflects limited transparency compared to premium competitors.
How it compares in its category
Polypropylene dividers are the industry standard for lunch box compartmentalizers and pose lower chemical risk than older polycarbonate (PC) alternatives that may contain BPA. Glass dividers would eliminate plastic leaching entirely but are heavier and fragile for portable lunch use. Silicone dividers are also an option but are not as rigid for compartment separation. Komax's PP formulation is consistent with mass-market food storage and sits in the middle-safety tier of this category: functional and reasonably safe for intended use.
If you buy it
Store these dividers at room temperature or refrigerated; do not place them in direct contact with boiling water, microwave, or oven. Hand-wash or use the top shelf of a dishwasher on a low-heat cycle to avoid warping and surface degradation. Inspect annually for cracks, cloudiness, or discoloration, which may indicate polymer breakdown; replace if visible damage occurs. Avoid prolonged contact with hot, acidic foods (e.g., tomato sauce) or high-fat foods (e.g., oil-based dressings) left at room temperature for extended periods, as PP can soften under these conditions.
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.”
Microplastics from degradation (polypropylene fragmentation)
Repeated dishwasher cycles, scratching, and thermal cycling can cause PP to shed microscopic particles over years of use. No specific data exists for Komax Biokips, but this is a known wear pattern for food-contact plastics; risk is minimized by hand-washing and replacing worn dividers.
Chemical leaching at elevated temperature
Polypropylene is designed to resist leaching at food temperatures (refrigerated and room temperature). No additives, plasticizers, or contaminants have been identified in Komax products on the market; leaching becomes theoretically possible only if dividers are exposed to sustained heat above 70°C, which is outside intended use.
BPA or phthalate content
Polypropylene does not require BPA or phthalates for its function and is not formulated with these additives by standard industry practice. Komax does not disclose alternative plasticizers, but no recalls or contamination reports exist for this brand.
Mold or bacterial growth in crevices
Any compartmentalized food-storage container can trap moisture and food residue if not dried thoroughly after washing. This is a hygiene issue rather than a material toxicity issue; risk is user-dependent and managed by proper cleaning and air-drying before storage.
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
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⚠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.