Phosphate Standard Solution; 50 mg/L PO4; 500 mL bottle
https://www.cloudsystems.sa/shop/phosphate-standard-solution-50-mg-l-po4-500-ml-bottle-334955
https://www.cloudsystems.sa/web/image/product.template/334955/image_1920?unique=381a1cd
محلول عيارى للفوسفات 50 مج / لتر
