Blue Wool Standard Fade Comparison Scale Lookup

Bounded offline reference: Blue Wool references commonly run1(low lightfastness) to8(high lightfastness), with separate test conventions such as ISO and AATCCsystems. Source: ISO105-B02and textile lightfastness reference methodology. Not direct object lifetime, lux-safe limit or universal equivalence of every reference set. Only explicit topic keys supported: direction, iso, aatcc, limitations. No complete external corpus, live data or personal assessment implied.

Description

Blue Wool references compare lightfastness under specified exposure conditions.

Blue Wool references compare lightfastness under specified exposure conditions.^[1]

Reference sets and rating conventions must remain explicit when interpreting a label.

When to use Blue Wool Standard Fade Comparison Scale Lookup

Use this tool to read a bounded explanation for an exact reference topic. Establish the object or visitor scope, measurement units and independently applicable conservation, engineering, access or editorial reference.

How to use Blue Wool Standard Fade Comparison Scale Lookup and understand its results

Establish the object or visitor scope, measurement units and independently applicable conservation, engineering, access or editorial reference.
Enter topic, using the field meanings and rules below, then run the tool.
Read result.text. Use the units and sign conventions below.
Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.

Input field	Meaning	Value type	Requirement
topic	Topic	string	Required

Choose one exact topic token from the table. The implementation looks up the stored value and returns it in the documented output field. Matching is case-sensitive; unrecognized tokens fail. This is an offline bounded reference, not a live catalogue or independent attribution.

Topic token	Stored value
direction	Under a declared matching Blue Wool set, larger ratings indicate greater lightfastness.
iso	ISOBlue Wool1–8references use specified exposure/comparison conditions.
aatcc	AATCCreference designations/conditions must not be silently substituted for ISO1–8.
limitations	Actual artwork response, exposure spectrum, temperature and RH may differ from test textiles.

value=referenceTable[exactToken]

Use the matching field units and the exact boundary, ordering and reference rules above.

Output field	Meaning	Value type
result	Structured result; its nested fields below contain the actual calculation or selected reference	object
result.text	Text	string

json

{
  "input": {
    "topic": "direction"
  },
  "output": {
    "result": {
      "text": "Under a declared matching Blue Wool set, larger ratings indicate greater lightfastness."
    }
  }
}

Limitations and assumptions

Object condition, observation coverage and applicable references determine applicability. A supplied comparison or record does not certify conservation treatment, engineering, access compliance or insurance eligibility. Actual artwork response, exposure spectrum, temperature and RH may differ from test textiles.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.

Alternative or Complementary methods

For a related step, use Moderate Sensitivity Material Lux Limit Lookup: Lighting limits for moderately sensitive materials depend on the adopted conservation reference and exposure context. For a complementary comparison, use Max Display Lux for Sensitive Materials Lookup: Lighting limits for sensitive materials require the applicable conservation reference and object context.

References

Blue Wool Standard Fade Comparison Scale Lookup — tool.io

Similar or alternative tools

Moderate Sensitivity Material Lux Limit Lookup
Lighting limits for moderately sensitive materials depend on the adopted conservation reference and exposure context.
Max Display Lux for Sensitive Materials Lookup
Lighting limits for sensitive materials require the applicable conservation reference and object context.