Art Preservation Services Home About us Contact us Ordering

Cost-effective environmental measurement and control products for museums, archives and historic buildings.

Microclimate products

Scavengel Sheet  |  RHapid PAK Silica Gel  |  MarvelSeal ® Barrier Film

  Scavengel Pollutant Control Sheet    [ top  | order ]

x-section of Scavengel pollutant control sheet
 
Cat # Description Price
4440 Scavengel pollutant control sheet
Minimum order 1 yard
Sold in 1 yard increments
$60/yard
22" width

Art Preservation Services introduces Scavengel for the passive control of gaseous pollutants in museum exhibition and storage cases. Due to its unique composition and design, it is very effective in removing a broad range of common indoor pollutants over a very short period of time. Due to its high load factor, it also has a very high capacity for removing gaseous pollutants. Scavengel consists of small grains of two types of pollution scavengers embedded within a 2 mm (1/16 inch) thick porous polyester sheet, containing 500g of media per square meter of material (0.1 pound per square foot).

The active media consists of a mix (50:50 by volume) of:
  • activated alumina impregnated with 8% potassium permanganate
  • activated carbon granular media

In part, the effectiveness of Scavengel is based on the combination of two types of media. Potassium permanganate, a strong oxidizing chemical, breaks down pollutants whereas activated carbon adsorbs pollutants within its enormous network of internal capillaries. The combination of a chemisorption and physical adsorption process is the key to the material's broad-spectrum capacity to remove a very wide range of pollutants.

The effectiveness of Scavengel is further improved by the rate at which it adsorbs pollutants in a passive application. Because each small grain of media floats within Scavengel's porous polyester matrix, there is an enormous surface area available, permitting a rapid response between the material and the pollutant.

Please continue to check on our website - www.apsnyc.com - for the most current information on our new pollution removal media and best methods of application.


  RHapid PAK silica gel   [ top  | order ]

RHapid PAK in its new convenient packaged form replaces Arten loose gel.

A simple solution for the installation of silica gel in sealed microclimates, RHAPID PAK represents the latest innovation in silica gel technology.

How it works: Silica gel has been used in museums throughout the world for decades to stabilize relative humidity (RH) in sealed exhibition cases and storage units. Silica gel provides environmental protection to museum collections by acting as a buffer against relative humidity changes.

RHAPID Gel was developed specifically for museum applications. Its unique features give it the greatest capacity of any gel in its ability to adsorb and desorb moisture within the standard relative humidity range for museums.

- Each RHAPID PAK unit contains 0.5 lb (250 grams) of pre-conditioned (or dry) RHAPID Gel in a moisture permeable bag (dimensions L x W x H: 6.5" x 5" x 0.6" [16.5 x 12.5 x 1.5 cm])

- RHAPID PAK units are available dry, or at 30%, 40%, 45%, 50% or 60% relative humidity. This allows the end-user to select any RH by mixing the correct proportion of pre-conditioned RHAPID PAKs.

- RHAPID PAK can be easily reconditioned by the end-user.

Since RHAPID Gel had the highest buffering efficiency among silica gels, less is required. The efficiency of the package makes RHAPID PAK the most cost-effective humidity buffering gel available.

Based upon standard museum recommendations, one RHAPID PAK will condition 2 to 4 cubic feet of case volume (2 cubic feet for permanent exhibits, and 4 cubic feet for temporary applications). That is, more silica gel is required in long-term exhibition cases to provide a stable buffering environment.

Please see our Silica Gel FAQ for guidance on the amount of silica gel required for your application, or download the full publication for a comprehensive overview on silica gel for museum applications.

Cat # Description Price
4152 RHAPID PAK silica gel - dry
6 pack - total 3 lb

$35
RHAPID PAK silica gel - conditioned
6 pack - total 3 lb
41730 RHAPID PAK silica gel
30% RH

$50
41740 RHAPID PAK silica gel
40% RH

$50
41745 RHAPID PAK silica gel
45% RH

$50
41750 RHAPID PAK silica gel
50% RH

$50
41760 RHAPID PAK silica gel
60% RH

$50

  MarvelSeal ® barrier film   [ top  | order ]

MarvelSeal ® is a flexible moisture barrier film, made from a sandwich of polyethylene, aluminum, and polyester. The very thin aluminum film serves as a barrier that will resist the transmission of water vapor and other atmospheric gases.

MarvelSeal ® film is thin and flexible, yet it has high tear resistance. It can be cut with scissors to any shape or size. It is most commonly used as a liner to isolate unstable case construction materials, to seal shipping crates, storage units and exhibit cases, or as barrier bags. It is available in a 3-foot width.

Cat # Description Price
4420 MarvelSeal ® barrier film
10 yards

$75
36" width
4421 MarvelSeal ® barrier film
25 yards

$125
36" width
4422 MarvelSeal ® barrier film
50 yards

$200
36" width
Copyright © Art Preservation Services, 2007. All rights reserved. Last update: 28 June, 2007.