An approved washing machine and method of washing laundry is provided wherein a user can select an amount of an additive, such as detergent, to be automatically supplied from a bulk additive reservoir to the washing machine tub during the appropriate time in the wash cycle. The selected amount of additive corresponds to the amount of payment deposited by the user in the machine. The payment may be made by coin, currency, or debit card.

 
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< Sprinkler provided with a built-in mechanism for dispensing detergent

> Stable solid block detergent composition

> Process for the production of nan-sized zeolite A

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