{"closest_prior_art":[{"name":"Image Permanence Institute A-D Strips","overlap":"Commercial dye-coated acid-indicator coupons are placed in individual closed acetate-film enclosures, change color with acidic vapor, are compared with a calibrated five-band card, recorded, and used to prioritize monitoring, cold storage, freezing, and duplication. This covers the proposal's core sensor, enclosure-level measurement, calibrated bands, and decision linkage.","remaining_difference":"The screened proposal adds lot-matched blanks, an inert noncontact holder, standardized illumination and optional reflectance colorimetry, explicit sequential acceleration analysis, confirmatory examinations, and post-response verification.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},{"name":"Canadian Conservation Institute recurring A-D Strip monitoring practice","overlap":"Official guidance describes placing A-D Strips in film boxes, monitoring them weekly, extending the interval when stable, recognizing the autocatalytic threshold, and taking preservation action when rapid change appears.","remaining_difference":"The guidance does not clearly specify control-corrected longitudinal readings, blinded readers, acceleration thresholds, post-intervention coupons, or the proposed bounded validation design.","source_ids":["SRC3"]},{"name":"National Archives acetate-film assessment and response workflow","overlap":"Official guidance identifies vinegar syndrome, recommends A-D Strips to assess individual acetate holdings, and connects results to isolation, cold storage, reformatting, and specialist involvement; it also distinguishes hazardous nitrate-film handling.","remaining_difference":"It does not describe the proposal's lot controls, optical instrument readings, repeated trend model, or post-response chemical verification.","source_ids":["SRC2"]}],"contrastive_claim_falsifier":"The remaining claim is falsified if blinded, control-corrected repeated readings with the proposed holder and optical protocol do not improve repeatability, detection of direction or acceleration, or verification of reduced enclosure acidity relative to ordinary A-D Strip visual assessment, or if apparent changes are dominated by coupon aging, enclosure ventilation, humidity, illumination, ambient acids, or reader variation.","contrastive_claim_remaining":"Relative to established A-D Strip practice—not relative to ambient logging or odor detection—the potentially distinct claim is that lot-matched controls, contained noncontact placement, standardized reflectance measurements, sequential acceleration rules, confirmatory examination, and post-response coupons provide a more reproducible closed-loop condition-management signal than conventional visual strip scoring.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"The bounded search covered the named intervention, A-D/acid-detector terminology, vinegar syndrome and acetate-film-base degradation, commercial and official practices, standards-related terms, recurring monitoring, colorimetry, and component combinations. Four opened direct sources span four publishers and include first-party and government guidance.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"The proposed surrogate calibration followed by noncontact monitoring of 20 confirmed acetate enclosures and 10 non-acetate controls is limited in duration and authority, uses blanks and blinded optical readings, and can directly test repeatability and correspondence with physical condition. Established strip limitations make this comparison informative.","source_ids":["SRC1","SRC3"],"status":"PASS"},"distinct_testable_claim":{"rationale":"The broad contrast against ambient logging, odor, and one-time inspection is already occupied by A-D Strip practice. A narrower, falsifiable claim remains for the added control-corrected longitudinal workflow, acceleration detection, instrumental reading, and post-response verification.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"The pilot is non-treating and conservator-controlled, excludes unidentified or nitrate film and unsafe containers, and preserves management authority over movement and treatment. Official guidance confirms that nitrate film requires special handling and specialist involvement; no obvious stop applies to the restricted surrogate-and-confirmed-acetate pilot.","source_ids":["SRC1","SRC2","SRC3"],"status":"PASS"},"supported_problem":{"rationale":"The sources consistently describe cellulose-acetate hydrolysis/vinegar syndrome as progressive and accelerating, with shrinkage, brittleness, curling, channeling or emulsion distortion, and show that enclosure-based strips can detect deterioration before noticeable odor and guide earlier cold storage or duplication.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"}},"prior_art_disposition":"ESTABLISHED_PRACTICE","problem_evidence":{"finding":"The problem is visible and well supported for cellulose-acetate film holdings: deterioration produces acidic vapor, accelerates after an autocatalytic threshold, and can become physically destructive. However, enclosure-level colorimetric acid detection with calibrated bands and preservation responses is already an established archival practice.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P092","screen_survival":false,"search_lanes":{"component_combination":{"no_result_note":null,"queries":["cellulose triacetate film acetic acid dosimeter color indicator enclosure reflectance colorimeter","A-D Strips re-test film collection monitoring","vinegar syndrome monitoring repeated A-D strips cold storage film archives"],"source_ids":["SRC1","SRC3"]},"direct_problem_and_intervention":{"no_result_note":null,"queries":["cellulose acetate film vinegar syndrome acid detection strips A-D strips enclosure monitoring colorimetric","acid detection strips cellulose acetate audiovisual archives product instructions","vinegar syndrome acid detector strip cold storage duplication monitoring"],"source_ids":["SRC1","SRC2","SRC3","SRC4"]},"products_practices_and_standards":{"no_result_note":"Standards-related searches located storage, enclosure-material, and free-acidity standards, but the retained first-party and official practice sources were more direct evidence for the proposed coupon workflow.","queries":["acid detection strips cellulose acetate audiovisual archives product instructions","ISO cellulose acetate film vinegar syndrome acidity indicator strips standard","vinegar syndrome acid detector strip ISO standard cold storage duplication monitoring"],"source_ids":["SRC1","SRC2","SRC3"]},"synonyms_and_historical_terms":{"no_result_note":null,"queries":["vinegar syndrome acetate film base degradation acid detector strips","cellulose diacetate triacetate acetic acid indicator archival film cans","acetic acid syndrome photographic film color change paper strip"],"source_ids":["SRC1","SRC2","SRC3","SRC4"]}},"sources":[{"claims_supported":["A-D Strips are an existing IPI-manufactured product for detecting, measuring, and recording acetate-film vinegar syndrome.","They are placed in closed cans, bags, boxes, or cabinets and visually compared with a five-band calibrated card.","Published levels map deterioration to monitoring, cold storage, freezing, and copying actions."],"publisher":"Image Permanence Institute, Rochester Institute of Technology","source_id":"SRC1","source_type":"FIRST_PARTY_PRODUCT","title":"Using A-D Strips","url":"https://filmcare.org/ad_strips"},{"claims_supported":["Cellulose acetate can develop acidic vinegar syndrome with dimensional change, brittleness, channels, and odor.","NARA recommends A-D Strips to prioritize deteriorating film for isolation, cold storage, and reformatting.","Nitrate film presents distinct fire and regulatory hazards requiring specialist handling."],"publisher":"U.S. National Archives and Records Administration","source_id":"SRC2","source_type":"OFFICIAL_GUIDANCE","title":"Film-Based Negatives and Positives","url":"https://www.archives.gov/preservation/holdings-maintenance/film-based"},{"claims_supported":["Odor can be a late indication after deterioration has become significant.","A-D Strips were developed for placement inside acetate motion-picture cans and provide color-correlated condition levels.","Guidance describes weekly monitoring, longer intervals when stable, the autocatalytic level, and preservation actions, while cautioning that the method is not exact."],"publisher":"Canadian Conservation Institute, Government of Canada","source_id":"SRC3","source_type":"OFFICIAL_GUIDANCE","title":"Care of Plastic Film-based Negative Collections — Technical Bulletin 35","url":"https://www.canada.ca/en/conservation-institute/services/conservation-preservation-publications/technical-bulletins/care-plastic-negative.html"},{"claims_supported":["Acetate-film decay accelerates as it progresses and produces shrinkage, embrittlement, and buckling.","A-D Strips placed inside film cans use a calibrated color chart and can detect vinegar syndrome before noticeable odor.","Advanced findings lead to cold or frozen storage and duplication."],"publisher":"National Film Preservation Foundation","source_id":"SRC4","source_type":"TRADE_PROFESSIONAL","title":"Vinegar Syndrome","url":"https://www.filmpreservation.org/preservation-basics/vinegar-syndrome"}],"world_novelty_boundary":"This bounded public-web screen establishes substantial collision with an established archival product and practice. It does not determine whether the narrower controlled, longitudinal, instrument-read, post-response workflow exists elsewhere, nor does it establish world novelty, patentability, market size, expert acceptance, or realized preservation value."}