Propadyn Museart 3400, Cassettes large 400 g, 35% to 80 rH

Propadyn Museart stands out for its versatility and effectiveness:

• it constantly maintains the desired level of humidity inside closed environments ranging in size from a small box to a shipping container, during transport and storage, even for long periods of time and without any need for electricity.
• It can be used in every type of climate situation: from the desert to the tropics, in places with high or low humidity levels.
• Propadyn Museart can be programmed to maintain the desired degree of humidity, between 35 and 80 %.

Technical Characteristics

• Propadyn Museart prevents humidity fluctuations originating from internal or external sources by gradually compensating for the entry or escape of moisture, thus constantly maintaining a stable level of humidity as programmed. Propadyn Museart rapidly corrects variations in humidity, preventing abrupt fluctuations and constantly maintaining the desired humidity.
• is highly effective both in absorbing and releasing the desired humidity.
• requires no pre-conditioning prior to use.
• is regenerable.
• does not release liquid and powder during use, which is the most frequent drawback of many dehydrating agents and humidity controllers. Propadyn Museart is not deliquescent and can therefore be used under all conditions.
• enables high energy savings in synergy with air conditioning systems.
• acts as a flame retardant, thanks to its chemical composition, countering the propagation of fire.
• is not affected by Volatile Organic Compounds (VOC) and, at the same time, is able to absorb a high amount of these atmospheric VOC.

Propadyn® acts like a kind of power-free climate control system. If humidity rises – for example, when sunlight heats a display case – Propadyn® rapidly absorbs the excess moisture. When humidity falls again at night, Propadyn® releases the moisture it has stored. In this way, the relative humidity remains stable, with fluctuations kept to a minimum.

References

Renowned institutions such as the Museo della Scala and the Museo Fila use Propadyn® to protect historic instruments and other sensitive exhibits.

The following references to case studies and material tests (such as the 'Oddy Test') – available either in their original form or as excerpts prepared for you by D&J – demonstrate that Propadyn® is not only effective, but also safe for use with sensitive museum collections.

Museo Polo di Torino

Propadyn® was selected by the Museo Polo di Torino to stabilise the relative humidity inside a display case with a volume of approximately eight cubic metres. The project involved monitoring the thermo-hygrometric conditions within the new Samurai display case in the Rotunda Hall of the Royal Armoury in Turin.

A summary of the case history provided by Propadyn® can be found here.

You can access the excerpts below:

Extract02_propadyn_Samurai_Display_Case_March_2017_EN_092026.pdf

Extract04_propadyn_Samurai_Display_Case_May_2017_EN_092026.pdf

Extract05_propadyn_Samurai_Display_Case_June_EN_092026.pdf

Extract06_propadyn_Samurai_Display_Case_July_2017_EN_092026.pdf

Extract08_propadyn_Samurai_Display_Case_September_2017_EN_092026.pdf

Extract09_propadyn_Samurai_Display_Case_October_2017_EN_092026.pdf

Extract10_propadyn_Samurai_Display_Case_November_2017_EN_092026.pdf

Extract11_propadyn_Samurai_Display_Case_December_2017_EN_092026.pdf

Musée de l'Ephèbe

The collaboration between Promuseum, Propagroup, Testo and the Musée de l’Ephèbe in Cap d’Agde once again demonstrated the effectiveness of Propadyn® in stabilising relative humidity, even under particularly challenging environmental conditions.

The presentation focuses on the preventive conservation of museum collections, with particular emphasis on the measurement and regulation of relative humidity (RH). Using the Musée de l’Ephèbe in Agde as a case study, it explores current approaches to environmental control in exhibition spaces, storage areas and display cases.

A summary of the case history provided by Propadyn® can be found here.

You can access the excerpt below:

Extract_propadyn_ATELIER_SITEM_2021_EN_092026.pdf

Propadyn® Museart – the solution for protecting works of art from humidity.

Propadyn® vs Silica Gel

When conventional silica gel is placed inside a museum display case, it continues to absorb moisture from the air until the environment becomes extremely dry. For many historic objects and materials, such as wood, canvas or parchment, excessively dry conditions can be just as damaging as excessive humidity, potentially causing materials to crack or become brittle. To use silica gel as a humidity buffer, it must first be “pre-conditioned” to the required relative humidity in specialised climate-controlled chambers, which can be a very labour-intensive process.

Conventional silica gel simply removes moisture from the air, whereas Propadyn stabilises humidity bidirectionally. While silica gel acts primarily as a desiccant, Propadyn functions as an intelligent humidity buffer.

Here is a detailed side-by-side comparison of the two technologies: