Description
Require preservationTimestampSeconds no earlier than collectionTimestampSeconds and return their difference.
Environmental records use measurement bases, sample conventions, dates, and source labels. A calculation applies the supplied convention; it does not verify sampling quality, detect contamination, or establish compliance.
Require preservationTimestampSeconds no earlier than collectionTimestampSeconds and return their difference.
When to use this tool
Use Sample Collection Preservation Lag when you need one environmental data component with its basis and limitations stated.
How to use the tool and how it works
- Enter collectionTimestampSeconds, preservationTimestampSeconds. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read lagSeconds. Use the output convention below.
Require preservationTimestampSeconds no earlier than collectionTimestampSeconds and return their difference.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| collectionTimestampSeconds | Collection Timestamp Seconds | Required. Finite number. |
| preservationTimestampSeconds | Preservation Timestamp Seconds | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| lagSeconds | Lag Seconds | Required. Finite number. |
{
"input": {
"collectionTimestampSeconds": 1000,
"preservationTimestampSeconds": 1360
},
"output": {
"lagSeconds": 360
}
}Limitations and assumptions
- Use synchronized clocks; lag alone does not verify preservative, storage conditions, sample integrity, or compliance with an analytical method.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Check the full sampling method, analytical uncertainty, and applicable assessment requirements separately.
References
Similar or alternative tools
- Media Correction Publication Lag
Require correctionTimestampSeconds no earlier than originalTimestampSeconds and subtract for lagSeconds.
- Case Handoff Receipt Delay
Require receivedTimestampSeconds no earlier than sentTimestampSeconds and return their difference.