Polyester fibre woven tapes - Part 3: Specifications for individual materials - Sheet 1: Tapes woven...
Applies to tapes woven on conventional or shuttleless looms from continuous filament polyester fibres. This sheet gives specific requirements for the number of warp ends, the number of picks, the shrinkage (length and width) and the tensile strength of two types of tape. The contents of the corrigendum of January 1998 have been included in this copy.
Environmental testing - Part 2-44: Tests - Guidance on test T: Soldering
Provides background information and recommendations for writers of specifications containing references to IEC 60068-2-20, IEC 60068-2-54 and IEC 60068-2-58.
The contents of the corrigendum of August 1995 have been included in this copy.
Modified starch — Determination of acetyl content — Enzymatic method
Applies to modified starch, both granular and soluble in cold water. The methods specified enable to measure total and free acetyl contents; bound acetyl content is calculated as the difference of the two values. Total content is determined by heating the sample with dilute hydrochloric acid and converting the acetate with adenosine-5-triphosphate (ATP) and coenzyme A (CoA) to acetyl-CoA. The…
Plastics — Polyamides — Accelerated conditioning of test specimens
The method described is based on storing the test specimens in an atmosphere of (70 ± 1) °C and (62 ± 1) % relative humidity (psychrometric temperature difference of (10 ± 0,3) °C), until moisture absorption by the specimen has reached at least 95 % of its equilibrium level. It is applicable to polyamides and copolyamides in grades containing fillers and other additives, but not to grades…
Tea and instant tea in solid form — Determination of caffeine content — Method using high-performanc...
The method specified is based on extracting the caffeine from a test portion with water at 90 °C in the presence of magnesium oxide, filtration followed by determination of the caffeine content by HPLC with UV detection. Applies to teas and instant teas with a caffeine content of greater than 0,3 % (m/m).
1. Scope
1.1 This Standard specifies the requirements for a material consisting of
alkaline salts and chlorine- or nonchlorine- bearing compounds suitable
for use in mechanical dishwashing equipment.
1.2 Material produced in accordance with this standard is intended for use
in mechanical dishwashing machines with soft or hard water. The
material is…
1. Scope
1.1 This standard applies to four grades of oxygenated gasoline to which no
lead or phosphorus compounds have been added and in which the
oxygenate consists essentially of C3, C4 and/or C5 alcohols. They are
intended for use in spark ignition engines under a wide range of
climatic conditions.
1.2 Some fuel systems may not be fully…
Determination of carbon content in uranium dioxide powder and sintered pellets — High-frequency indu...
The methods specified are based on heating a portion of the test sample at a temperature of at least 1100 °C to 1200 °C in an oxygen atmosphere, passing the evolved oxidation products over a purification trap filled with manganese dioxide catalyst and silver permanganate catalyst (that oxidises CO to CO2), trapping the CO2, restoring the initial pH continuously by addition of hydroxyl ions either…
