Will this work for a riso mz790u??

Yes, this is the correct ink for use in the Riso MZ790u. Thanks for considering Wholesale Widgets brand ink!

Will these work with ez390 model? we use s-4254 cartridge but i didn't see the ez390 riso model listed and wanted to be sure.

Box of 2 tubes of S-4254 compatible brand black ink for use in the Riso EZ220, MZ390, MZ790, MZ990, RZ220, RZ230, RZ310, RZ370, RZ390, RZ590 duplicators. We use these in our RZ390.

Is this compatible with Risograph RZ200 model?

Thank you for your question and interest in our products. Yes these are the correct ink for the Riso RZ200 model.

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Wholesale Widgets, Inc. 2 Brand Black Ink Tubes Compatible With Risograph S-4254. This is a Box of 2 Z Type Black Ink, For Use In Some Riso EZ, MZ, and RZ Series Digital Duplicators

Product ID: 263053353

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Description

Specifications

Manufacturer	Wholesale Widgets Inc.
Brand	Wholesale Widgets
Item Weight	5.13 pounds
Product Dimensions	4 x 7 x 11 inches
Item model number	EZ220, MZ790, MZ990, RZ220, RZ390, RZ590
Is Discontinued By Manufacturer	No
Color	Black
Material Type	Ink
Size	1000ml
Ink Color	Black
Manufacturer Part Number	S-4254

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