ID 266470423 © Fabiozzino | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
water hardness scale isolated white background value analysis concentration indicator quality research science soft test total biological chemical chemistry diagram environmental grain hard laboratory measure measurement measuring neutral scientific analytical high low classification drinking drink environment ph analyze aqua carbon monitoring parts pollution purity safe source base level tap contamination distillation illustration