HQ411D Laboratory digital pH meter with probe holder
https://www.cloudsystems.sa/shop/hq411d-laboratory-digital-ph-meter-with-probe-holder-331543
https://www.cloudsystems.sa/web/image/product.template/331543/image_1920?unique=381a1cd
جهاز قياس الرقم الهيدروجيني
