Tirzepatide 10 Vials Kit

HPLC verified >99.4% purity – Consistent peptide weight
We ran a reverse-phase HPLC analysis on our Agilent 1260 Infinity system using a C18 column. Purity came in at 99.42% with a single sharp elution peak and zero detectable synthesis artifacts or truncation fragments. Lyophilized cake was solid, clean white with no meltback. Reconstituted in 2ml bacteriostatic water in under 12 seconds with gentle swirling. Extremely satisfied with batch batch-to-batch reproducibility.

Flawless vacuum seal and instant reconstitution
Received the 15mg vials packaged in custom foam slots with cold packs still cool. The vacuum seal on each vial was exceptionally tight—satisfying audible hiss upon inserting the needle. Added 1.5ml BAC water and dissolution occurred almost instantaneously with zero particulate suspension or foaming. Mass spectrometry (ESI-MS) matched theoretical molecular weight within 0.1 Da tolerance.

Superior dual GIP/GLP-1 receptor assay performance
Utilized in our in vitro cAMP accumulation assays evaluating dual agonist potency across transfected CHO-K1 cell lines. EC50 response curves mirrored reference controls with exceptional precision. The lyophilized puck was uniform, completely intact, and demonstrated outstanding stability over a 4-week freeze-thaw testing cycle at -20°C.

Spot-on fill volume and clean chromatogram
Tested 3 vials from the 30mg batch to verify net peptide content. BCA protein quantification confirmed an average fill of 30.6mg, comfortably exceeding label claim. Purity via UHPLC was 99.31%. Reconstituted optical density at 600nm was essentially baseline zero, proving zero aggregation or insoluble fibrils.

Exemplary cold-chain handling and analytical purity
Order arrived in Frankfurt via priority express within 3 business days. Thermal insulation was top tier. The 10mg vials showed immaculate cake structure with strong vacuum pressure. Reconstitution in 1.0 mL sterile water was completed in 8 seconds without agitation. Purity confirmed independently at 99.58% by our campus analytical core.

No TFA counter-ion residue, pristine baseline
Our mass spectrometry core was especially impressed by the clean desalt step; TFA residual levels were well below standard limits (<0.15%), eliminating cytotoxicity artifacts in our primary hepatocyte culture models. Purity exceeded 99.2%. Apex Pure Pep continues to be our primary reference standard provider.

Outstanding stability in 4°C solution over 28 days
We tracked aqueous stability of reconstituted 5mg vials stored at 4°C over 4 weeks using periodic HPLC sampling. Degradation was negligible (<0.4% over 28 days). The solid cake arrived pristine, fully vacuumed, and dissolved into an optically transparent solution with zero cloudiness.

Third-party Janoshik test verified 99.64% purity
Sent a blind sample from the 30mg lot to Janoshik Analytical for verification before starting our receptor binding assay pipeline. Report confirmed 99.64% purity and 31.2mg total peptide content. Outstanding vacuum seal, beautiful compact puck, and fast domestic delivery in 48 hours.

Excellent lyophilization quality and rapid solubility
Freeze-drying protocol is clearly optimized; the cake showed zero shrinkage or glassing along the vial walls. Solubilized 10mg into 2.0ml bacteriostatic solvent within 15 seconds. High reproducibility observed across all replicates in our cellular metabolic pathway assays.

Consistently reliable peptide chemistry across multiple orders
This is our third 10-vial bulk order of 15mg Tirzepatide for longitudinal rodent metabolic assays. Every single vial maintains identical vacuum integrity and crystal-clear reconstitution. Chromatographic purity consistently tests between 99.3% and 99.6%. Apex Pure Pep sets the benchmark.