01
Assay method must be stated
A useful chondroitin sulfate RFQ should state 90% or 95% target, acceptable assay method and whether chromatogram or additional purity support is required.
02
Animal source drives compliance review
Bovine, porcine, chicken and marine source routes affect allergen position, BSE/TSE scope, religious document availability and import review.
03
Do not compare price without document scope
Bulk quotations should confirm COA, MSDS, TDS, source statement, contaminant limits, pack size, lead time and destination-market requirements.