Check the listing for details. Whatman™ Acid-Alkali Universal pH Indicator 10 x 20 Strips - LABORATORY LAB. Condition: New, Made in United Kingdom. Listed at 48.56 USD. GE Healthcare offers Blue strip pH indicator test papers to meet demanding needs. These high-quality products combine ease-of-use with unsurpassed accuracy and consistency. Blue litmus paper strips are designed for fast, accurate, and reliable pH solution testing. INTERNATIONAL POSTAGE: We post worldwide, please ask for postage quotation before check out. Please do not pay until we have adjusted your invoice with confirmed postage fees. Items sold that are not a full box or pack will be dispatched in sellers own packaging with copies of the manufacturers documentation where applicable. We want you to be happy with your purchase and our service to you, so contact us if you have any problems with delivery or the products supplied, we will do our best to resolve to your satisfaction. A happy.