Endotoxin-free Sample Bottles : Reliable Vessels for Accurate LAL Test Assays
Catalog Number
|
Catalog No. |
Description |
Package |
|
EFB10 |
Endotoxin-free sample bottle, 10ml |
35 pcs/pack |
|
EFB50 |
Endotoxin-free sample bottle, 50ml |
12 pcs/pack |
Detailed Description
The product features of endotoxin-free sample bottles for bacterial endotoxin test (BET) are tailored to ensure accuracy, compliance, and reliability in critical testing workflows, mainly including the following core aspects:
● Ultra-low Endotoxin Level & Contamination Control
They achieve strict endotoxin limits (typically <0.005 EU/mL, far below BET interference thresholds) to completely eliminate background endotoxin interference, avoiding false-positive/negative test results. Post-production, they undergo rigorous endotoxin detection (e.g., LAL method) and 121°C high-temperature dry heat sterilization to ensure sterility and endotoxin-free performance.
● High-purity, Leak-proof Material Selection
Made of high-purity borosilicate glass or medical-grade polypropylene—materials with strong chemical corrosion resistance, compatible with common BET reagents (such as LAL reagent, endotoxin standard solution) without endotoxin leaching. This maintains the integrity of the sample to be tested and prevents reagent-sample interaction.
● Sealing & Anti-contamination Design
Equipped with endotoxin-free, silicone-free caps (to avoid additional endotoxin introduction from sealants) and a tight-sealing structure. This prevents external endotoxin contamination during sample storage, transfer, and incubation, and ensures no sample leakage.
● Practicality & Compliance
Available in multiple standard capacities (e.g., 10mL, 20mL, 50mL) to match different sample volumes in routine BET. The smooth inner wall design minimizes sample residue, facilitating complete transfer and reducing operational errors. They fully comply with international pharmacopoeia standards (USP, EP, Chinese Pharmacopoeia) to meet the compliance requirements of pharmaceutical, biotech, and medical device laboratories.
Applications of Endotoxin-Free Sample Bottles: Ensuring Accuracy in Critical Testing
Endotoxin-free sample bottles are critical for maintaining assay integrity in applications where trace endotoxin contamination (e.g., LPS from Gram-negative bacteria) could skew results or compromise safety. Their primary uses include:
Pharmaceutical & Biopharmaceutical Production: Essential for storing injectables, vaccines, recombinant proteins, and monoclonal antibodies during quality control testing (e.g., USP <85> LAL assays). Containers with endotoxin levels <0.005 EU/mL prevent false-positive results in pyrogen testing.
Medical Device Sterility Assurance: Used to collect and store samples from implants, catheters, or hemodialysis equipment for endotoxin analysis under ISO 10993-11 or EP 2.6.14 guidelines. Devices contacting cerebrospinal fluid or blood require rigorous endotoxin control to avoid patient reactions.
Biobanking & Cell Therapy: Safely preserve stem cells, DNA, and RNA in cryogenic conditions (-196°C) while maintaining endotoxin levels <0.1 EU/mL. These containers ensure sample viability for downstream applications like regenerative medicine.
Diagnostic Laboratories: Enable accurate measurement of endotoxins in clinical samples (e.g., plasma, cerebrospinal fluid) by eliminating container-derived contamination. Specialized tubes with heparin-free gel separation minimize in vitro cytokine induction.
Research & Biotechnology: Support sensitive experiments involving endotoxin-free reagents (e.g., transfection-grade plasmids) and cell culture media. High-purity glass containers (<0.06 EU/mL) are ideal for terminal sterilization and long-term storage.
Water & Environmental Testing: Validate endotoxin levels in purified water systems (e.g., USP <1231>) or environmental samples using pre-validated containers that meet strict regulatory thresholds.
These vessels are designed with features like sterile gamma irradiation, leak-proof seals, and low particle counts to ensure reliability across critical applications. Choosing certified endotoxin-free containers reduces assay variability and ensures compliance with global pharmacopeial standards.
Endotoxin Testing Related Fields
Endotoxin-free sample bottles are critical for accurate LAL (Limulus Amebocyte Lysate) test assays, ensuring no interference from exogenous endotoxins. Here’s a concise breakdown of their technical specifications:
1. Endotoxin Level
● Guaranteed Purity: Certified to contain ≤0.005 EU/mL (per LAL testing), far exceeding the USP <85> requirement of ≤0.06 EU/mL.
● Batch Testing: Each batch undergoes rigorous endotoxin testing to ensure consistency.
2. Material Selection
● Borosilicate Glass: Preferred for LAL assays due to minimal endotoxin adsorption. Glass maintains sample integrity and is resistant to leaching.
● Plastics: Medical-grade polypropylene (PP) or polystyrene (PS) may be used for specific applications, though glass remains the gold standard. PP offers flexibility and compatibility with autoclaving (up to 121°C).
● Surface Properties: Smooth surfaces minimize endotoxin adherence, with glass inherently superior to plastics.
3. Sterilization & Depyrogenation
● Dry Heat Sterilization: Glass bottles undergo depyrogenation at ≥200°C for ≥1 hour to incinerate endotoxins.
● Gamma Irradiation: Plastics are sterilized using ≥25 kGy gamma irradiation, complying with ISO 11137.
● Terminal Sterilization: Caps and closures (e.g., chlorobutyl rubber) are sterilized separately to ensure aseptic integrity.
4. Physical Design
● Sizes: Available in 10 mL, 25 mL, 50 mL, and 250 mL capacities, with options for screw caps, aluminum seals, or silicone septa.
● Closure Systems: Secure seals (e.g., o-ring screw caps) prevent leakage and contamination during storage or transport.
● Transparency: Glass and clear plastics allow visual inspection of samples without compromising purity.
5. Compliance & Standards
● USP <85> & <1235>: Aligned with endotoxin testing requirements for pharmaceuticals and medical devices.
● ISO 11137: Sterilization validation ensures consistent performance.
● USP Class VI: Plastics meet biocompatibility standards for sensitive applications.
6. Storage Stability
● Temperature Range: Glass maintains stability across wide ranges (e.g., -80°C to 200°C), while plastics like PP withstand -196°C to 121°C, suitable for cryogenic storage.
● Validation: Storage conditions (e.g., light exposure, duration) should be validated for each sample type.
7. Handling Recommendations
● Aseptic Technique: Use in a controlled environment (e.g., laminar flow hood) to prevent contamination.
● Pre-Use Checks: Verify certificates of analysis (CoA) for endotoxin levels and sterilization.
● Compatibility Testing: Validate container suitability for specific samples, especially when using plastics.