MTC Exposure Archive

Initiated: 25 February 2026

Location: Puchong, Selangor, Malaysia Climate Type: Tropical rainforest climate Approximate Conditions: High humidity, frequent rainfall, intense UV exposure, elevated daytime surface temperatures.

Most conservation science literature concerning oil painting materials, varnish aging, and ultraviolet fluorescence behavior is historically rooted in temperate Western museum environments. However, paintings in Southeast Asia exist under fundamentally different climatic realities: high humidity, intense ultraviolet exposure, unstable temperature cycles, biological activity, condensation, and prolonged heat accumulation. In Malaysia, many artworks survive not inside climate-controlled institutions, but within uncontrolled real-world environments such as residential interiors, shophouses, studio spaces, corridors, cafés, and semi-open tropical architecture. Despite this, very little long-term observational data exists documenting how modern oil painting materials physically and optically behave under such conditions. This archive was initiated as an independent tropical field observation project based in Puchong, Malaysia. Rather than attempting to simulate ideal museum storage conditions, this study intentionally exposes modern painting materials to uncontrolled tropical environmental stress in order to observe real-world material degradation behavior over time. The project accepts instability, unpredictability, and environmental inconsistency as part of the observational framework itself.

The purpose of this archive is not to establish absolute scientific conclusions, but to build an evolving observational reference system for tropical conservation practice. The project aims to: - Observe how modern oil painting materials react under uncontrolled tropical exposure. - Record the gradual transformation of ultraviolet fluorescence behavior over time. - Study the suppression, collapse, or masking effects caused by brown-toned mixtures commonly encountered in Southeast Asian restoration and retouching practices. - Investigate the relationship between binder oxidation, fluorescence reduction, dirt accumulation, and environmental stress. - Establish preliminary visual references for future comparison with controlled conservation baseline studies. - Create an independent long-term tropical material observation archive for Southeast Asian conservation research.

BOARD PREPARATION The exposure board was constructed using a stretched artist canvas mounted onto a traditional wooden stretcher frame in order to simulate the structural behavior of real-world contemporary paintings under tropical environmental conditions. No intermediate paint layer or colored ground was applied prior to testing. All oil paint materials were applied directly onto the prepared commercial canvas surface using freshly extruded paint from aluminum tubes. No solvent dilution or medium reduction was introduced during application. Variations in paint thickness, oil separation, surface texture, and brush resistance were intentionally preserved as part of the observational structure. Following completion, the board was allowed to air-dry indoors for approximately three months prior to outdoor tropical exposure. At the time exposure commenced, the paint films were considered surface-dry but not fully cured through long-term oxidative polymerization. The exposure board consists of a manually arranged collection of contemporary oil painting materials applied directly onto a prepared archival surface. Rather than functioning as a tightly controlled laboratory matrix, the board was intentionally constructed to preserve the irregularity, variation, and material behavior commonly encountered in real-world painting practice. The test board includes a broad range of modern commercially manufactured oil colors, including: Titanium White Zinc White Burnt Umber Payne’s Grey Cerulean Blue Van Dyke Brown (Hue) French Ultramarine Cobalt Blue Lamp Black Flesh Tint Cadmium Red Hooker’s Green Cadmium Orange (Hue) Burnt Sienna Sap Green Raw Sienna Lemon Yellow Cadmium Yellow Deep (Hue) Cadmium Yellow Vermilion (Hue) Buff Titanium Viridian (Hue) No attempt was made to standardize paint thickness or industrial pigment concentration. The entire board is intentionally subjected to uncontrolled outdoor tropical exposure, including: Direct sunlight Ultraviolet radiation Heat accumulation Humidity fluctuations Rain exposure Day/night thermal cycling Airborne contamination Observations are recorded periodically using: Visible light photography Ultraviolet fluorescence photography Microscopic observation Written material observations The project does not attempt to function as a laboratory accelerated aging simulation. Instead, it documents how contemporary oil painting materials physically and optically behave under uncontrolled real-world tropical environmental stress within the Malaysian climate.

This archive should be understood as a material observation system rather than a finalized scientific authority. All findings remain provisional, observational, and open to future revision. The archive is intended to function as: - A tropical conservation field record - A longitudinal material behavior archive - A future comparative reference against controlled baseline studies - A documentation system for real-world Southeast Asian environmental stress on painting materials

This project does not operate under laboratory-controlled conditions. Environmental exposure varies unpredictably according to seasonal weather patterns, sunlight duration, rainfall intensity, airborne contamination, and tropical humidity fluctuations. As such, observations generated from this archive should not be interpreted as standardized scientific aging data, but rather as longitudinal field observations documenting real-world material behavior under uncontrolled tropical conditions.