Frequently asked questions
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What guarantees the purity of our peptides?
At ULTRA LABS, quality, transparency, and purity are at the heart of our requirements. All of our peptides undergo analysis by Janoshik Analytical, an independent laboratory specializing in peptide analysis. According to our analysis reports, our products have a purity of over 99%, with many references reaching 99.70%. These results allow us to verify the analytical purity of the tested samples and reinforce the traceability of our products. Our commitment: controlled quality, independent analyses, and total transparency on the results.
Why is the purity of peptides important?
Purity is an essential criterion in scientific research. It indicates the proportion of the desired compound relative to other substances detected by the analytical method used. At ULTRA LABS, our analysis reports indicate a purity of over 99%, with many references reaching 99.70%. A high level of purity helps to limit interference from impurities in experimental work.
What is the difference between a purity of 98% and 99.70%?
A purity of 98% corresponds to approximately 2% of other detected components, compared to 0.30% for a purity of 99.70%, according to the measurement method used. This difference can be significant in research requiring precise characterization of substances. However, it is important to distinguish chromatographic purity from the actual peptide content, sterility, and the absence of contaminants.
How to properly store lyophilized peptides?
Lyophilized peptides should be stored according to the stability recommendations specific to each product. For many formulations, storage in the refrigerator between 2°C and 8°C is recommended. It is also advisable to protect the vials from light, humidity, and significant temperature fluctuations. Storage at −20°C may be suitable for certain references, subject to the manufacturer's data.
Why are peptides presented in lyophilized form?
Lyophilization is a low-temperature dehydration process that removes water from a formulation. This technique is used to improve the stability of many substances sensitive to moisture. It also facilitates the storage and transport of certain peptides, depending on their characteristics and formulation.
How long do peptides last?
The shelf life depends on several factors: * The nature of the peptide. * Its formulation and packaging. * The storage temperature. * Its exposure to humidity and light. * The manufacturer's stability data. The expiration or reanalysis date must be determined based on stability data tailored to the product. After reconstitution, stability may differ and should not be assumed without specific data.