Delivery cartridge

1. A dishwasher detergent delivery cartridge comprising a plurality of unit dose elements of a dishwasher detergent composition, the composition being a substantially coherent mass and consisting of:

a) at least 20 wt. % of methyl glycine diacetic acid and/or a salt thereof and/or of glutamic diacetic acid and/or salt thereof;

b) between about 0 to 25 wt. % of a further organic builder;

c) between about 0.1 to 20 wt. % of a lubricant;

d) between about 0.1 to 5 wt. % of a binder;

e) between about 0.01 to 3 wt. % of an enzyme or combination of enzymes;

f) between about 0.1 to 30 wt. % of a surfactant;

g between about 0.1 to 10 wt. % of a sulfonated polymer;

h) optionally between about 1 to 20 wt. % bleach;

i) optionally silicone defoamers; and

j) optionally fragrances, pigments and/or dyes.

2. A delivery cartridge according to claim 1 , wherein said builder is selected from an inorganic builder selected from carbonates, bicarbonates, borates, silicates, aluminosilicates, phosphates and phosphonates; and an organic builder selected from monomeric polycarboxylic acids and/or their acid forms, suitably as monomers or oligomers; salts of citric acid, tartaric acid, lactic acid, glycolic acid, succinic acid, malonic acid, maleic acid, diglycolic acid and fumaric acid; polyacrylates and co-polymers of acrylates with maleic acid and sulfonated polymers; polyasparaginic acid and its salts; and iminodisuccinic acid and its salts.

3. A delivery cartridge according to claim 1 , wherein said lubricant is selected from: fatty acids and derivatives thereof polyethylene glycol; PEG/glycerol functionalised with fatty acid carboxylates; sucrose glycerides; oils; and low melting point non-ionic surfactants.

4. A delivery cartridge according to claim 1 , wherein the binder is PVP.

5. A delivery cartridge according to claim 1 wherein the enzyme(s) is/are enrobed or enveloped in the detergent composition.

6. A delivery cartridge according to claim 1 , wherein the composition is substantially bleach free.

7. A delivery cartridge according to claim 1 , wherein the unit dose elements are insoluble or not very soluble in the cold water of a prewash but soluble in the hot water of a main wash.

8. A delivery cartridge according to claim 1 , wherein the composition is manufactured by a forming process which involves elevating the temperature of the composition to form the unit dose elements.

9. A delivery cartridge according to claim 1 , wherein the delivery cartridge is a refill device having a plurality of chambers which retain said unit dose elements, the unit dose elements being separate from each other, the delivery cartridge being adapted for engagement in a housing, the housing being built into a dishwasher or independent of the dishwasher.

10. A delivery cartridge according to claim 1 , wherein the cleaning performance of the first unit dose element in the cartridge and the last unit dose element in the cartridge does not vary by more than 20%.

11. A method of providing a delivery cartridge as claimed in claim 1 , wherein the unit dose elements are manufactured by injection moulding.

12. A method of washing kitchenware in a dishwashing machine, comprising the step of providing a delivery cartridge according to claim 1 in the dishwashing machine and dispensing the dishwasher detergent composition therefrom.

13. A delivery cartridge according to claim 1 , wherein the composition comprises between about 60 to 70 wt % of methyl glycine diacetic acid and/or a salt thereof and/or of glutamic diacetic acid and/or a salt thereof.