Humidity testing

Products that are likely to be packaged in permeable materials, such as paper or cardboard, need to be tested in high-humidity conditions. 

a common combination is 37 °C/70% relative humidity (RH) or 40 °C/80% RH. This type of testing is most useful for boxed laundry powders (particularly those destined to be sold in tropical climates), but may be important for the Eve soap if it is to be sold in a wrapper or carton rather than a tightly sealed pack. 

---

Salt spray tests, humidity tests, and other accelerated tests, some usiag sulfur dioxide and carbon dioxide, have shown favorable results for tin—2inc ia comparison with 2iac, cadmium, and fin deposits. Chromating improves the performance. 

As of this writing the 2inc alloys are too new to have actual corrosion resistance data, except for that based on accelerated tests. Zinc—nickel usually shows better results than 2inc-cobalt in salt spray tests. The reverse is tme when the Kesternich test is used. Tin—2inc performs well in both salt spray and Kesternich tests, but appears only to equal 2inc plating and 2inc—nickel in humidity tests. 

Humidity tests are generally of more practical use than salt-spray tests, particularly where painting is employed, as the thoroughness of rinsing may be checked by this means. The use of contaminated water can leave... 

The "Mannich" adduct synthesized from the condensation of formaldehyde, 2-(methylamino)ethanol and poly-4-vinylphenol as shown in Structure I, has been evaluated as a function of molecular weight versus corrosion resistance as measured by salt spray and humidity tests on Bonderite 1000, an iron phosphate conversion coating. The molecular weight of the polymer was varied from approximately = 2,900 to 60,000. The corrosion resistance results were essentially equivalent over the molecular weight range evaluated. 

Humidity Testing of Silicone Polymers for Corrosion Control of Implanted Medical Electronic Prostheses... 

Reprise cTbumiditi, Essai (Taking up Moisture Test). A French Humidity Test described by L. Medard, MP 33, 325-27(1951)... 

Temperature Humidity Test 103 is briefly described in Vol 4, p D1097-R... 

Sherrick, ArOrdn 24, 330(1924) 4)Marshail 3 (1932), 155-7 Humidity Test. See Hygroscopicity Test... 

Hygroscopicity (or Humidity) Test (Absorption of Moisture Test) (Reprise d humidite, Essai, in Fr)... 

Hygrascapicity (ar Humidity) Test (Absorption of Moisture Test) (Reprise d humidite, Essai, in Fr) (Hygroskopizitat- or Feuchtigkeit Probe, in Ger). The hygr nature or property of a material to absorb moisture from its environment must be known if an expl is to be considered for military or commercial use. Absorption of moisture can have an adverse effect on the sensitivity, stability, or reactivity of expls. This property should be negligible to very low absorption for most expls... 

The tropical humidity test simulates hot humid conditions—e.g., 90°F., at 90% relative humidity. The samples are wetted down and sprayed with a mixed fungal population to accelerate mildew growth. 

Fungal inoculation. This can be a Petri dish test, a tropical humidity test, or sometimes a soil burial test, which can be considered a type of superinoculation. 

It is of interest that veneer-faced low-density particleboards made from acetylated veneers and acetylated core particles showed excellent dimensional stability in both liquid water and humidity tests and were resistant to attack by fungi in an 8-week soil block test [57]. Furthermore, during the 150-day bending-creep test, the totally acetylated boards showed no strength or weight loss during exposure to T. palustris. 

Entry Substrate 90 C Aging Test Results 80 C with 90% Humidity Test Results Log (O ) at 25°C (Pascals) Log (O ) at 150 C (Pascals)... 

---