Magnetic Tape Binder Hydrolysis Risk Age Flag Checker
Actual tape age comparison with caller independently applicable review trigger only. Binder composition, storage and symptoms matter; age alone does not diagnose hydrolysis, authorize baking or guarantee playable/safe tape.
Description
Tape age is one possible trigger for conservation review.
Tape age is one possible trigger for conservation review.1
Age alone does not establish binder hydrolysis or playback condition. Use this tool to calculate the stated observation or conditional model from supplied measurements.
When to use Magnetic Tape Binder Hydrolysis Risk Age Flag Checker
Use this tool to calculate the stated observation or conditional model from supplied measurements. Establish the institution, collection/material context, applicable standards or authority, reference date and measurement units.
How to use Magnetic Tape Binder Hydrolysis Risk Age Flag Checker and understand its results
- Establish the institution, collection/material context, applicable standards or authority, reference date and measurement units.
- Enter independentlyVerifiedTapeManufactureYear, callerReviewYear, callerAgeReviewThresholdYears, using the field meanings and rules below, then run the tool.
- Read result.observedTapeAgeYears, result.meetsCallerAgeReviewScreen. Interpret each field using the units, signs and evidence rules below.
- If input validation fails, correct the reported field and run again. Before applying a successful result, check the stated reference scope, units, assumptions and any retained unknown evidence.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| independentlyVerifiedTapeManufactureYear | Independently verified tape manufacture year | number | Required |
| callerReviewYear | Caller review year | number | Required |
| callerAgeReviewThresholdYears | Caller age review threshold years | number | Required |
Require integer manufacture year 1–9999, integer review year from manufacture through 9999 and integer review threshold 0–10000 years. Subtract calendar-year numbers for age and compare age≥threshold. No exact manufacture date, binder chemistry or deterioration diagnosis is inferred.
tapeAgeYears=reviewYear−manufactureYear; meetsAgeScreen=(ageYears≥callerThresholdYears) Apply the field units and exact ordering, boundary and evidence rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result containing the calculation or selected reference fields below | object |
| result.observedTapeAgeYears | Observed Tape Age Years; use the units, sign convention and calculation stated above | number |
| result.meetsCallerAgeReviewScreen | Meets Caller Age Review Screen; use the units, sign convention and calculation stated above | boolean |
{
"input": {
"independentlyVerifiedTapeManufactureYear": 1990,
"callerReviewYear": 2026,
"callerAgeReviewThresholdYears": 20
},
"output": {
"result": {
"observedTapeAgeYears": 36,
"meetsCallerAgeReviewScreen": true
}
}
}Limitations and assumptions
Age alone does not establish binder hydrolysis or playback condition. Results depend on the independently established measurement basis and the exact model assumptions above.
Every listed input requires an explicit value. Unexpected fields, incorrect value types, nonfinite numbers and sparse numeric arrays fail validation; tool-specific bounds and alignment rules apply as described above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful calculation that reports a false comparison or retains unknown evidence.
Alternative or Complementary methods
Use Vinegar Syndrome AD Strip Level Alert Classifier to examine a related aspect: AD strips indicate acidity associated with cellulose-acetate film deterioration.
Use Film Gauge Identifier mm Class Lookup (8/16/35mm) where its separate inputs and scope apply: Film gauge identification involves measured width and format details such as perforations.
References
Similar or alternative tools
- Vinegar Syndrome AD Strip Level Alert Classifier
AD strips indicate acidity associated with cellulose-acetate film deterioration.
- Film Gauge Identifier mm Class Lookup (8/16/35mm)
Film gauge identification involves measured width and format details such as perforations.