Sigma-Aldrich: most-reported complaints
Automated analysis of 5 public Trustpilot reviews published 2023-05-12 to 2026-09-20. TrustScore 2.6 from 9 total reviews — see the Trustpilot page. Quick answer: is Sigma-Aldrich legit? Issues below reflect what reviewers reported, not findings of wrongdoing.
Reviewers most often report delivery delays, with three out of five complaints citing late arrivals. Two reviewers also mention misleading pricing as a significant concern. The data covers a period from May 2023 to September 2026, but no trend can be established due to the low number of reviews.
How to reach Sigma-Aldrich
These are the contact details Sigma-Aldrich publishes on its Trustpilot profile, as of our last check on 2026-09-26 — it publishes no phone number there, address Laclede Avenue 2909, St. Louis, 63103, US.
Trustpilot lists this business as no longer collecting reviews. New reviews are not currently being gathered for its profile. See the Trustpilot page for the current status.
The company has not claimed its Trustpilot profile. We last checked this profile on 2026-09-26 and found 5 new reviews. These are facts Trustpilot publishes about the profile, as of our last harvest.
Sector benchmark: delivery late makes up 60% of this company’s complaints vs a 22% median across 92 ranked companies in its sector.
Review velocity: 2 of this company’s 9 Trustpilot reviews (22%) were written in the last 12 months.
Not enough reviews to establish a trend.
What are the most common complaints about Sigma-Aldrich?
Delivery late
3 reports · 60% of complaints“Delivery times are a joke - it could be a week or it could be months.”
1 reader marked this review helpful on Trustpilot.
“Appalling delivery times and false stock positions on web site”
1 reader marked this review helpful on Trustpilot.
“this began a 3 week run around to even figure out the status of the order, let alone receive it”
Misleading pricing
2 reports · 40% of complaints“Delivery times are a joke - it could be a week or it could be months.”
1 reader marked this review helpful on Trustpilot.
“Appalling delivery times and false stock positions on web site”
1 reader marked this review helpful on Trustpilot.
Method: reviews are classified into a fixed complaint taxonomy by an automated reader; every category shown is backed by at least two verbatim quotes from distinct reviews. Trends are computed from dated review counts only. Negative reviews are deliberately over-sampled for evidence depth; headline percentages use an unbiased recent sample only. Report updated 2026-09-26.