How to convert concentration ppm Videos

hola ayudame por favor tengo un fungicida que es el sulafto de cobre pentahidratado que tiene una concentracion de 21.36 de ingrediente activo por litro y mi pregunta es quiero preparar un medio de cultivo de 100 ml a una concentracion de 10 ppm ayudame porfa.

Tu P.M no es el correcto

Hola, buenas noches, espero y pueda ayudarme.. Como se lleva a cabo el calculo de concentración de una sustancia?

hola sera me puedes ayudar con el siguiente ejercicio: una disolucion de CaCl2; 2,00M tiene una densidad de 1,080g/ml. calcular: a)el porcentaje p/p de cloruro en la disolucion b)la fraccion molar de CaCl2 datos: pf(H2O)=18,0 pf(Cl)=35,5 pf(CaCl2)=111,0 Le agradezco que me colabore con este ejercicio

Capo por favor respondeme, quedé re confundido por una cosa: Si supuestamente el factor de equivalencia debe ser de un millón ¿Por qué en ppm volúmen es mg/L ó mg/ml? Ahí no existe razón de un millón como por ejemplo en ppm masa, donde mg/kg representa que hay un millón de miligramos en un kilogramo. Pero NO hay equivalencia de un millón en miligramos sobre un litro ni mucho menos en miligramos sobre mililitros. Estuve buscando en libros y el ppm en volúmen no lo expresan como tú pusiste (mg/L ó mg/ml) sino que lo expresan de la siguiente forma: mg/m^3. Es decir miligramos sobre metro cúbico, donde SÍ existe factor de equivalencia de un millón. Por favor atiende a mi inquietud, gracias y muy buen vídeo, te entendí todo lo demás, me suscribo. Saludos desde Colombia.

hola, no entiendo esta me ayudas? determinar volumen de solución necesario para preparar una solución de vitamina c 0.50ppm partiendo de 2.0mg de vitamina c

wave have a question you how you use the module with your spektrum first connect the battery to the module or cable to first trainer module as the trainer cord to connect the transmitter is turned thanks

Oh im stupid. It didnt make sense because i was supposed to be finding the ppm, wait no. I dont even know!!! UGHHHH, school.

Man respect and all.. But you babble on and say things that will be in the instructions.. I got nothing from this but your anal maintenance schedule.. Slow down and speak. and stay on subject.. You show a 190 as ppm is that times 10 ? you jut confused me more than help me. Sorry.. I been growing for 40 years never used a EC meter now I see why.

Interesting dude I only have a Tds meter and way confused reading stuff on forums or off nutrient bottles that say ec Time to upgrade I think as both my ph meter and Tds are playing up

In my experience it does not matter which reading you use as long as you know which you are using. As you said many meters out there have different types of readings, but the friendly people at your local grow store should be able to help anyone who is confused at point of sale. And if they can not, your in the wrong store! Just to clarify I have used EC/PPMx500/PPMx700 and all it takes is some general intelligence to work it out. I mean, we are not exactly sending people to Mars here. I actually prefer PPM but my Bluelabs EC Pen (which actually measures temps and all three varieties of TDS) is broken and I need to return it for warranty. Sadly electronics are not made as well as they used to be due to competition and trying to cut costs in manufacture. So I'm wondering where you got your qualifications to be able to tell people what to do? As i stated in an earlier video of yours, perhaps trial and error before spruking anything would help. Make your own mind up before you try and influence the minds of others. Growers Love BU P.S. Do not take this an an affront, I'm simply stating my opinion as you do yours. I just dislike when people are given half truths and misinformation in general.

Just thought you'd like to know used your germinating technique with the sand which Baggie and a paper bag and I put it next to my ballast two white alien fem seeds popped in 3 days 100% success thanks for the tips mang Ps more hot girlfriend weed reviews please, just sayin ;)