Water quality. Measurement of biochemical parameters. Spectrometric determination of the chlorophyll-a concentration1 Scope 1. 1 This International Standard specifies a method for the determination of the chlorophyll a concentration. The procedure can be applied for phytoplankton in natural surface waters and for testing algal growth in bio assays. Using appropriate sampling it can also be applied to phytobenthic communities (see annex A).

Motor mowers using metal or other solid cutting elements

The corresponding terms were introduced only when they appear in a definition of a product or process and when their definition was found necessary for understanding or for avoiding any ambiguity

1 Confinement of radioactive material

Annex A (informative) Description and evaluation of manufacturing imperfections and conditions for rejection of seamless steel gas cylinders at time of final visual inspection by the manufacturer

is applicable when there is a need to assess a medical device supplier's quality system

The main changes that have been made to this part of the standard are as follows:

BS EN 60601 is a European standard on medical electrical equipment

Systems designed for use in domestic dwelling

except that dimensions for accessory clamps have been specified to ensure interchangeability of accessories between tables

An index allows the identification of each term in their French or German equivalent

5 Resistance against impact loads

BS EN 60426 provides a guideline on determining electrolytic corrosion