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156 resultados para ppb en todos

19 resultados en vídeo
Details from a hollow cathode atomic aborption lamp used for chemical analysis of heavy metals and other metalloids
00:10
Alta definición
Indoor dashboard showing green CO2 graph and orange PM2.5 line
00:08
Alta definición
Close-up of human hand holding simple test strip submerged in glass of tap water for analysis of overall water hardness. Comparison chart for result determination in domestic setting.
00:15
Alta definición
Multiple air quality sensor stations displaying real-time pollution measurements and environmental parameters with color-coded indicators
00:10
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Details from an ICP-OES equipement where a radio frequency is used to heat a argon plasma and create atomic emission for chemical analysis purposes
00:10
Alta definición
Close-up simple test strip immersed in clear tap water inside glass pitcher. Home water quality analysis for household consumption. pH level, hardness, alkalinity, chlorine, nitrites, nitrates, lead,
00:08
Alta definición
Recycling symbol for plastic number 11 PB image photo
00:10
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Details from an ICP-OES equipment where a radio frequency is used to heat a argon plasma and create atomic emission for chemical analysis purposes
00:05
Alta definición
Close up view of hand dipping DIY test strip into clear water in glass mug for analysis of tap water quality, hardness, alkalinity, pH level, chlorine, nitrites, nitrates, cyanuric acid, lead in water
00:13
Alta definición
Details from an ICP-OES equipment where a radio frequency is used to heat a argon plasma and create atomic emission for chemical analysis purposes
00:11
Alta definición
Close-up, male hands removing DIY colored water quality test strip from plastic packaging. Ready to measuring pH level, nitrites, nitrates, hardness, alkalinity, lead, chlorine, cyanuric acid in tap d
00:12
Alta definición
Details from a hollow cathode atomic aborption lamp used for chemical analysis of heavy metals and other metalloids
00:07
Alta definición
Close up view of hand dipping DIY test strip into clear water in glass mug for analysis of tap water quality, hardness, alkalinity, pH level, chlorine, nitrites, nitrates, cyanuric acid, lead in water
00:11
Alta definición
Close-up simple test strip immersed in clear tap water inside glass pitcher. Home water quality analysis for household consumption. pH level, hardness, alkalinity, chlorine, nitrites, nitrates, lead,
00:10
Alta definición
Close up view of person hand holding simple test strip, immersing into clear glass of tap water. Household method determines mineral content, alkalinity, pH level, chlorine, nitrites, nitrates, hardne
00:12
Alta definición