Seal Integrity Leak-Proof Friction Fit Material Grade Medical LDPE / PP Dimensions 12mm, 15mm, 18mm, 25mm Compatibility Rimmed & Rimless Tubes Premium Test Tube Caps are essential laboratory closures designed to prevent sample evaporation, accidental spillage, and airborne contamination. At Labend Scientific, our Cap & Closure Series is manufactured from high-grade Low-Density Polyethylene (LDPE), ensuring a flexible yet airtight friction fit that accommodates various tube tolerances. In high-throughput clinical and analytical settings, capped tubes are systematically organized in Wire Pattern Stands or Round Stands to maintain vertical stability during centrifugation or incubation. When handling volatile reagents measured by Measuring Cylinders, these caps provide a secondary layer of protection against hazardous fumes. Our closures are frequently utilized in molecular biology protocols, fitting perfectly on tubes stored in MCT Racks or when transporting cultures alongside Petri Dish Racks. For long-term storage, the chemical-resistant nature of our caps prevents degradation from electrolytic solutions or solvents delivered via ESAW Wash Bottles. For specialized titration or support setups on an ESAW SV-5 Base, capped tubes can be safely maneuvered using Fisher Clamps without risking sample loss. All closures are designed to be easily sanitized and managed within Draining Baskets, and are compatible with upright storage on Pipette Vertical Stands for multi-channel workflows on Laboratory Trays. Closure Intelligence FAQ Q1: LDPE vs PP Caps? LDPE caps offer better flexibility for friction fits, while PP caps provide higher thermal resistance for autoclaving. Q2: Are they leak-proof during shaking? Yes, the internal dual-seal rib design ensures a secure lock even during moderate vortexing or agitation. Q3: Color coding availability? We offer caps in various colors to help researchers visually differentiate between various reagent groups or sample types. Q4: Are they reusable? While designed for single-use in sensitive assays, they can be sanitized and reused for general teaching laboratory experiments. Compatible Lab Infrastructure VIEW CAPS COLLECTION ESAW SV-5 Base Lab Tray Wash Bottles MCT Rack Round Stand Petri Rack Wire Stand Fisher Clamp Cylinder Draining Basket Pipette Stand TARGETED KEYWORDS: Plastic Test Tube Caps Price, LDPE Test Tube Stopper Supplier India, Airtight Lab Tube Closures, Colored Test Tube Caps Bulk, Polypropylene Tube Plugs, Labend Scientific Catalog, Centrifuge Tube Caps, 12mm 15mm 25mm Tube Caps, #LabSupplies #TestTubeCaps #LabendScientific #ScientificPlasticware #ClinicalLab #ResearchSafety #SampleStorage #ChemistryAccessories International Fulfillment & Distribution Jurisdictions UNITED STATES | UNITED KINGDOM | GERMANY | SAUDI ARABIA | UNITED ARAB EMIRATES | SINGAPORE | MALAYSIA | AUSTRALIA | CANADA | INDIA | SOUTH AFRICA | BRAZIL | QATAR | OMAN | FRANCE | ITALY | SPAIN | NEW ZEALAND | IRELAND | NETHERLANDS | THAILAND | INDONESIA | VIETNAM | SOUTH KOREA | MEXICO | PHILIPPINES | EGYPT | NORWAY | SWITZERLAND | TURKEY | ARGENTINA | PORTUGAL | SWEDEN | JAPAN | BELGIUM | POLAND | DENMARK | FINLAND | GREECE | CHILE | PERU | HUNGARY | AUSTRIA