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Sourcing · Logistics · continued

Cold packs, phase-change material, and what survives ten days posts 31–60

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.

JB
j.bhattacharyaTL221 Jun 2024#31

Declared contents and declared value are the two fields most likely to cause a query, and accuracy in both is the only strategy that survives.

15 likes 2.1y
QL
quiet_lurkerTL221 Jun 2024#32
AN
a.nybergTL222 Jun 2024#33
j.sorensen, post #1: Cold packs, phase-change material, and what survives ten days — setting out what I have, and where I think it stops being reliable. I have spent a fortnight trying to pin cold packs down and I want to set out where I have got to, because I suspect the honest answer is duller than the thread this will produce. What I have: a consistent… Go to post

Cold packs is well covered in the tag pages, and the older discussions are better than the recent ones because they were argued out properly. Worth twenty minutes before adding to this one.

0 likes in reply to #1 2.1y
TN
t.nguyen_newTL1Member22 Jun 2024 · edited#34
cohort_drift, post #8: My understanding of cold packs is a few years old and may have been superseded. If it has been, I would genuinely like to know rather than keep repeating it. Go to post

The reason cold packs keeps being re-asked is that the answer is conditional and people quote it without the condition. It is not that the answer is unknown.

5 likes in reply to #8 2.1y
GB
g.bakkenTL222 Jun 2024#35

Post #34 is the version of this I will quote in future. One addition.

Peak periods and public holidays affect this more than any other factor and are entirely predictable in advance.

10 likes 2.1y
ST
sterile_tableTL3Regular23 Jun 2024#36

Where I part company with post #33, and it is a narrow parting.

Marking my uncertainty on cold packs explicitly. I am confident about the direction, much less confident about the size, and not confident at all that it generalises past the case in the first post.

22 likes 2.1y
SL
s.lindqvistTL223 Jun 2024#37
s.beaulieu, post #5: The reason cold packs is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for the other is silent. Go to post

If someone has run cold packs properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet.

0 likes in reply to #5 2.1y
FR
figure_reviewTL2Member24 Jun 2024#38

Document outcomes rather than forecasting them. A forecast in this category reads as reassurance and is not one.

3 likes 2.1y
EI
e.iyerTL224 Jun 2024#39

Thank you for taking the time. That was more work than a reply usually is.

28 likes 2.1y
DV
dr.villanuevaTL3Physician24 Jun 2024#40
br.wikstrom, post #23: Distinguishing three things in the cold packs discussion that keep getting used interchangeably: the observation, the proposed mechanism, and the recommendation that gets attached to both. Go to post

Two people in this thread mean different things by cold packs and are disagreeing about the definition while believing they are disagreeing about the facts. Worth pausing to define it.

0 likes in reply to #23 2.1y
RS
r.scholtenTL2Member25 Jun 2024 · edited#41

Photographing the parcel on arrival before opening it takes ten seconds and is the difference between a report and a recollection.

The general case is well covered; this is the awkward specific one.

10 likes 2.1y
GV
g.verhoevenTL225 Jun 2024#42

Something worth flagging about cold packs: the strongest-sounding claims in this thread are the ones with no source attached, which is the usual pattern and not a coincidence.

3 likes 2.1y
FF
f.fenwickTL3Regular25 Jun 2024#43
p.lindqvist, post #21: Post #19 describes the usual case. This is about the unusual one. Insurance and carrier liability: most parcel carriers limit liability. Understanding the limits before choosing a carrier matters if you are shipping expensive material. Go to post

Worth separating two things that post #41 runs together.

Adding what did not work for me on cold packs, since the failures never get written up and they are half the useful information.

0 likes in reply to #21 2.1y
AP
ar.petrovTL226 Jun 2024#44
m.rasmussen, post #12: I would be cautious about generalising from the cold packs example above. It is a good example. It is one example. Go to post

This follows post #41 rather than contradicting it.

Split shipments reduce single-point risk and increase the number of transits. Which trade is right depends on what you are protecting against.

31 likes in reply to #12 2.1y
DW
diluent_watchTL2Member26 Jun 2024#45

Second-hand on cold packs, so weight it accordingly — someone whose method I trust told me this and I have not verified it myself.

16 likes 2.1y
ZV
z.vogelTL226 Jun 2024#46

Post #45 is right about the mechanism and I think understates the practical bit.

Delivery to an address where somebody is present is worth more for cold-chain material than any packing decision available to the supplier.

I have written this out at length because the short version keeps being misread.

6 likes 2.1y
Z
ZieglerTL3Regular27 Jun 2024#47
e.kjeldsen, post #28: Appreciated. The plain phrasing does more work here than a longer post would. Go to post

Helpful, and easy to find again, which is half of what a good reply is.

1 like in reply to #28 2.1y
MD
m.dumitruTL227 Jun 2024#48

Peak periods and public holidays affect this more than any other factor and are entirely predictable in advance.

0 likes 2.1y
HN
h.nicolaidesTL3Regular27 Jun 2024#49
dr.villanueva, post #40: Two people in this thread mean different things by cold packs and are disagreeing about the definition while believing they are disagreeing about the facts. Worth pausing to define it. Go to post

Answering the question post #45 raises rather than the one it answers.

Two sentences on cold packs and then I will stop, because the rest is speculation and the thread is better without mine.

What is documented is narrow. What is inferred from it is broad. The gap between them is where every argument here lives.

22 likes in reply to #40 2.1y
IG
in.guerreroTL228 Jun 2024 · edited#50

Cold packs: I would want to see the raw numbers rather than the summary before agreeing. Summaries lose exactly the information that would settle this.

10 likes 2.1y
NR
n.rowntreeTL3Regular28 Jun 2024#51

Declared contents and declared value are the two fields most likely to cause a query, and accuracy in both is the only strategy that survives.

I have left out the parts I could not verify.

17 likes 2.1y
KK
k.kuuselaTL228 Jun 2024#52
CW
c.wijnbergTL2Member29 Jun 2024#53
bench_peak, post #4: Import restrictions by jurisdiction: what is legal to import for personal use varies enormously by country. Some jurisdictions are quite permissive; others are not. Checking your own country's rules before ordering is prudent. That is all I can say without guessing. Go to post

I would keep cold packs and the decision it usually gets used for separate in this thread. They are related and they are not the same question, and merging them is why the last one went badly.

0 likes in reply to #4 2.1y
RB
r.bakkenTL229 Jun 2024#54

On post #50 — agreed on the reasoning, with one qualification.

Cold packs looks different depending on whether you are reading the primary literature or the summaries of it, and the difference is not in our favour.

3 likes 2.1y
K
KStephanopoulosTL3Regular29 Jun 2024#55

Post #53 is the version of this I will quote in future. One addition.

Import restrictions by jurisdiction: what is legal to import for personal use varies enormously by country. Some jurisdictions are quite permissive; others are not. Checking your own country's rules before ordering is prudent.

Scoping that to what I have actually seen rather than what I have read.

24 likes 2.1y
TI
t.ibarraTL230 Jun 2024#56

Trying to state the cold packs position in a way that someone who disagrees would recognise as fair, because I do not think the version in this thread passes that test.

0 likes 2.1y
FE
footnote_entryTL3Regular30 Jun 2024#57
KStephanopoulos, post #55: Post #53 is the version of this I will quote in future. One addition. Import restrictions by jurisdiction: what is legal to import for personal use varies enormously by country. Some jurisdictions are quite permissive; others are not. Checking your own country's rules before ordering is prudent. Scoping that to what I have actually seen… Go to post

Having read the whole cold packs thread before replying: the question in the first post has not actually been answered yet, and three of us have answered a nearby one instead.

1 like in reply to #55 2.1y
HC
h.castellanosTL230 Jun 2024#58

Anyone deciding whether a delay is a problem should ask what would change if they waited another week. Usually the answer is nothing.

7 likes 2.1y
BW
bac_waterTL2Regular1 Jul 2024#59
a.hartmann, post #19: Confirming post #16 from a second method, which matters more than confirming it from a second person. At what point is a parcel genuinely a problem: if it was despatched weeks ago and there has been no update for days at customs, it might be held or lost. Days of delay at customs without update is ordinary; weeks without movement… Go to post

Following this. I have the same question and no better information than the first post.

31 likes in reply to #19 2.1y
SZ
s.zamoraTL21 Jul 2024#60
quiet_lurker, post #32: Good question, well framed, and I would like to see it answered properly. Go to post

I read post #58 twice before replying, because I had assumed the opposite.

The strongest argument against my own position on cold packs, stated as well as I can state it, since nobody else has yet.

0 likes in reply to #32 2.1y