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storage

Page 2 of 27 · 646 questions tagged storage.

646 questions · sorted by votes · page 2 of 27

39 votes 3 answers42k views
What is the thermal exposure on a Hangzhou to Singapore lane in summer?

What I have: Hangzhou · Singapore. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s…

cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

524 questions
international-shipping
international-shipping

Cross-border movement of research material: transit lanes and their thermal profiles, tracked versus untracked, declaration accuracy, and what…

427 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by tri_gly_ala 48k · 20 months ago
39 votes 5 answers35k views
How long does oral semaglutide stay within specification at 40 °C once reconstituted?

For reference: oral semaglutide · 40 °C. I have read the obvious sources and they disagree with each other, so I would rather ask people who have actually done this.…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

301 questions
asked by otto_brenner 19k · 22 months ago
39 votes 5 answers33k views
How long does liraglutide stay within specification at room temperature once reconstituted?

The particulars: liraglutide · room temperature. I want a method I can write down and repeat, not a rule of thumb. I would rather over-engineer this than discover a…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

301 questions
asked by zainab_mustafa 16k · 2.0 years ago
39 votes3 answers32k views
What is the thermal exposure on a Chengdu to Spain lane in summer?

Stated plainly: Chengdu · Spain. I would like help reading this properly rather than being told what conclusion to reach. I have the full report including the method…

cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

524 questions
international-shipping
international-shipping

Cross-border movement of research material: transit lanes and their thermal profiles, tracked versus untracked, declaration accuracy, and what…

427 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by Dr_Jonas_Halvorsen 41k · 19 months ago
39 votes 5 answers30k views
Is 4 °C an acceptable storage condition for lyophilised retatrutide?

Numbers first: 4 °C · retatrutide. I would rather be corrected now than propagate something wrong. I am specifically not interested in a testimonial; I am interested…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

301 questions
asked by swab_and_wait 15k · 20 months ago
38 votes 5 answers57k views
Is room temperature an acceptable storage condition for lyophilised mazdutide?

Stated plainly: room temperature · mazdutide. This is asserted often enough that I assumed it was established, and then I went looking for the source. I have searched…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

301 questions
asked by Dr_Marek_Zielinski 39k · 23 months ago
38 votes 5 answers52k views
Is there any published stability data for survodutide at room temperature?

Concretely: survodutide · room temperature. The claim is plausible, which is exactly why I want to check it. I am able to read a paper if someone points me at one. Is…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
asked by dana_wexler 15k · 2.0 years ago
38 votes0 answers52k views
Is an insulated cool box good enough for storing reconstituted mazdutide?

What I am working with: an insulated cool box · mazdutide. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but not…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

524 questions
harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

445 questions
asked by olu_babatunde 14k · 2.2 years ago
38 votes5 answers36k views
What is the thermal exposure on a Wuhan to Germany lane in summer?

The case in front of me: Wuhan · Germany. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the specifics…

cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

524 questions
international-shipping
international-shipping

Cross-border movement of research material: transit lanes and their thermal profiles, tracked versus untracked, declaration accuracy, and what…

427 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by eighty_six_hours 16k · 2.1 years ago
38 votes0 answers31k views
Is a domestic freezer good enough for storing reconstituted mazdutide?

Setup, so nobody has to ask: a domestic freezer · mazdutide. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but not…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

524 questions
harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

445 questions
asked by area_percent 13k · 21 months ago
38 votes 2 answers27k views
How long does liraglutide stay within specification at 40 °C once reconstituted?

For reference: liraglutide · 40 °C. I have read the obvious sources and they disagree with each other, so I would rather ask people who have actually done this. I…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

301 questions
asked by carys_meredith 17k · 16 months ago
38 votes0 answers22k views
Does orforglipron adsorb measurably to the vial wall at 2 mg/mL?

Setup, so nobody has to ask: orforglipron · 2 mg/mL. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by nadia_kowalczyk 14k · 21 months ago
38 votes0 answers18k views
How do I plan for a survodutide supply interruption without stockpiling badly?

The vial was lyophilised at the time, which I understand may matter a great deal. I want to decide this in advance so that I am not deciding it under pressure later.…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
discontinuation
discontinuation

Stopping treatment: tapering versus abrupt cessation, what the trial withdrawal arms measured, clinically driven stops, and the practical planning…

21 questions
cost-analysis
cost-analysis

Cost arithmetic done honestly: cost per milligram after dead-space loss, list versus net price, comparing a multi-dose vial to a fixed-dose pen,…

261 questions
asked by u100_marks 38k · 22 months ago
37 votes 5 answers71k views
How many freeze-thaw cycles will oral semaglutide at 2.5 mg/mL tolerate?

For reference: oral semaglutide · 2.5 mg/mL. I have read the obvious sources and they disagree with each other, so I would rather ask people who have actually done…

freeze-thaw
freeze-thaw

What repeated freezing does to a peptide in solution: ice-crystal shear at the growing front, freeze-concentration of solutes, pH shifts as buffer…

55 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by vial_five 15k · 2.0 years ago
37 votes5 answers67k views
Why does hydrolysis accelerate at 30 °C rather than proceeding linearly?

Details up front: hydrolysis · 30 °C. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would like to know how…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
hplc
hplc

Reverse-phase high-performance liquid chromatography, the workhorse purity method. Column chemistry, mobile-phase choice, gradient slope,…

466 questions
asked by s_bhattacharya 42k · 2.2 years ago
37 votes5 answers64k views
Does fibrillation dominate for semaglutide held at 4 °C?

For reference: fibrillation · semaglutide · 4 °C. I understand the observation; what I do not understand is the mechanism behind it. I have read the two review…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
hplc
hplc

Reverse-phase high-performance liquid chromatography, the workhorse purity method. Column chemistry, mobile-phase choice, gradient slope,…

466 questions
asked by dermot_kiely 14k · 2.2 years ago
37 votes 5 answers59k views
Is 4 °C an acceptable storage condition for lyophilised orforglipron?

Numbers first: 4 °C · orforglipron. I am asking for verification rather than opinion, ideally with something I can read myself. It is possible the evidence exists and…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

301 questions
asked by tri_gly_ala 48k · 2.0 years ago
37 votes 5 answers35k views
How many freeze-thaw cycles will ecnoglutide at 3.33 mg/mL tolerate?

Conditions: ecnoglutide · 3.33 mg/mL. I have done this once and I suspect I got away with it rather than got it right. For context: I keep records of every batch,…

freeze-thaw
freeze-thaw

What repeated freezing does to a peptide in solution: ice-crystal shear at the growing front, freeze-concentration of solutes, pH shifts as buffer…

55 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by marta_szymanska 17k · 19 months ago
37 votes 5 answers35k views
What happens to cagrilintide after six weeks at 25 °C in solution?

Numbers first: cagrilintide · six weeks · 25 °C. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would like to know…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

301 questions
asked by kirsi_lahtinen 45k · 2.1 years ago
37 votes5 answers30k views
What is the thermal exposure on a Wuxi to Singapore lane in summer?

Numbers first: Wuxi · Singapore. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s…

cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

524 questions
international-shipping
international-shipping

Cross-border movement of research material: transit lanes and their thermal profiles, tracked versus untracked, declaration accuracy, and what…

427 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by cake_intact 18k · 18 months ago
37 votes5 answers28k views
Does a phase-change pack hold a GLP-1 receptor agonist shipment for twenty-one days in transit?

Numbers first: a GLP-1 receptor agonist · twenty-one days. I can do the algebra. I am not confident about the conversion factors. If there is a standard way to lay…

cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

524 questions
international-shipping
international-shipping

Cross-border movement of research material: transit lanes and their thermal profiles, tracked versus untracked, declaration accuracy, and what…

427 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by marcus_thorbjorn 16k · 21 months ago
37 votes 2 answers21k views
Does cagrilintide adsorb measurably to the vial wall at 6.67 mg/mL?

What I have: cagrilintide · 6.67 mg/mL. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by eoin_mcgarry 16k · 2.2 years ago
37 votes 5 answers20k views
Is minus 20 °C an acceptable storage condition for lyophilised semaglutide?

The specifics, since they change the answer: minus 20 °C · semaglutide. Somebody stated this to me confidently and I would like to check it before repeating it. I…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

301 questions
asked by ravenna_pace 13k · 22 months ago
36 votes 5 answers68k views
Does ecnoglutide adsorb measurably to the vial wall at 20 mg/mL?

The case in front of me: ecnoglutide · 20 mg/mL. I want the working, not the result — I need to be able to redo it with different numbers. I care about the precision…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by assay_blank 39k · 2.2 years ago