Kjemiteknikk

This European Standard specifies requirements for construction, performance and primary or selection packaging of fireworks. It is applicable to fireworks in categories F1, F2 and F3 according to EN 15947 2:2015. This European Standard does not apply for articles containing detonative explosives except for black powder or flash composition. This European Standard does not apply for articles containing pyrotechnic composition that includes any of the following substances: - arsenic or arsenic compounds; - hexachlorobenzene; - mixtures containing a mass fraction of chlorates greater than 80 %; - mixtures of chlorates with metals; - mixtures of chlorates with red phosphorus (except when used in Christmas crackers, party poppers or snaps); - mixtures of chlorates with potassium hexacyanoferrate(II); - mixtures of chlorates with sulfur (these mixtures are allowed for friction heads only); - mixtures of chlorates with sulfides; - lead or lead compounds; - mercury compounds; - white phosphorus; - picrates or picric acid; - potassium chlorate with a mass fraction of bromates greater than 0,15 %; - sulfur with an acidity, expressed in mass fraction of sulphuric acid, greater than 0,002 %; - zirconium with a particle size of less than 40 µm.

This part of ISO 8655 specifies - metrological requirements, - maximum permissible errors, - requirements for marking and - information to be provided for users, for manually operated precision laboratory syringes. It applies to syringes with nominal volumes up to 200 ml, designed to deliver their volume (Ex). Manually operated precision laboratory syringes are instruments used for delivering liquids and gases. The barrel is typically made of glass and the plunger and the needle are typically made of metal. NOTE General requirements and definitions of terms for piston-operated volumetric apparatus are given in ISO 8655-1. The gravimetric reference measurement procedure for the determination of volume is given in ISO 8655-6. A photometric reference measurement procedure for the determination of is given in ISO 8655-8. Alternative methods for the determination of volume are described in ISO 8655-7.

This part of ISO 8655 specifies a photometric reference measurement procedure for the determination of volume of piston-operated volumetric apparatus. The tests are applicable to complete systems comprising the basic apparatus (with a maximum nominal volume of 10 mL) and all parts selected for use with the apparatus, disposable or reusable, involved in the measurement by uptake (In) or delivery (Ex). NOTE General requirements and definitions of terms for piston-operated volumetric apparatus are given in ISO 8655-1. For the metrological requirements, maximum permissible errors, requirements for marking and information to be provided for users for piston-operated volumetric apparatus, see ISO 8655-2 for pipettes, see ISO 8655-3 for burettes, see ISO 8655-4 for dilutors, see ISO 8655-5 for dispensers, and see ISO 8655-9 for manually operated precision laboratory syringes. The gravimetric reference measurement procedure for the determination of volume of piston-operated volumetric apparatus is given in ISO 8655-6. Alternative methods for the determination of volume are given in ISO 8655-7.