Paper Test pH 1 to 14, in Plastic box box of 200 leaves-EIS-CH0626E offers a thoughtfully designed, durable resource for hands-on learning. Precision, for colleges, universities. Supplied in box of 10 books eachÂÂ with 20 strips of size 63.5 x 10 mm wide approx. Total 200 leaves. Paper Test pH 1 to 14, in Plastic Box.