Red light forgives sloppy engineering. UV doesn't.
Preview text: Why a 5nm drift on a red LED is a rounding error, and on a UV LED is a hazard.

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- Subject
- Red light forgives sloppy engineering. UV doesn't.
- Preview text
- Why a 5nm drift on a red LED is a rounding error, and on a UV LED is a hazard.
- From
- info@
emr-tek.com - Brand
- EMR-Tek
- ESP
- Klaviyo
- Sent
- Fri Sep 11, 2026, 11:59 AM ET
- Sent to
- emr-tek.com
- Size
- 14 KB
- Images
- 1
- Links
- 2
- Subject length
- 50 characters
Against EMR-Tek's usual
Sent in its busiest hour, 11 AM, which holds 25% of its emails. The subject is 50 characters; its average is 41.
Email headers
What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.
- From
- EMR-TEK <[email protected]>
- Subject
- Red light forgives sloppy engineering. UV doesn't.
- Date
- Fri, 11 Sep 2026 15:59:38 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-3
- Return-Path domain
- send.emr-tek.com
- DKIM signature
- d=emr-tek.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-canary-…-j8gg4 with SMTP
- from (unnamed) by geopod-ismtpd-3 with HTTP
Other sending headers (names only): X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID
Sent just before and after
| Sep 15, 2026 11:06 AM | You Don’t Need A Huge Setup | |
| Sep 14, 2026 3:12 PM | Bobby tested our 7-year-old Firestorm on video. | |
| Sep 13, 2026 12:31 PM | The shortcut I said no to. | |
| Sep 11, 2026 11:59 AM | Red light forgives sloppy engineering. UV doesn't. (this email) | |
| Sep 10, 2026 11:08 AM | I saw something on a spectrometer I couldn't unsee. | |
| Sep 9, 2026 11:40 AM | Hi. I'm Kris. | |
| Sep 8, 2026 12:17 PM | A Better Daily Ritual |
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Same ESP and the closest weekly volume, sent on Sep 11, 2026.









