Hand writing Water purification with marker, concept background
Palabras clave
hand,
marker,
whiteboard,
board,
word,
text,
ultraviolet,
water,
carbon,
preparation,
light,
undesirable,
gas,
electromagnetic,
quality,
drinking,
suspended,
virus,
contaminated,
active,
biological,
slow,
purification,
fungal,
filter,
filtering,
disinfection,
equipment,
solid,
parasite,
filter,
device,
algae,
standard,
filtration,
radiation,
concept,
sand,
removing,
process,
distillation,
chemical,
particle