User:Oskykins/Responsible use: Difference between revisions

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*The ones that are TRULY accurate within a mg are extremely pricey, usually used by institutions or professionals.

*bluelight:Those things are off by about 2-6mg every time. Its good for measuring things where the dose isn't as sensitive but I wouldn't try it for anything else.

*erowid: Tragic accidents, including freak-outs, trips to the emergency room, and even deaths, can result from inaccurately measuring doses. Crystalline materials differ in how "fluffy" they are; the volume of the same mass of material can vary dramatically and even with careful eyeballing, mistakes of 10-30 milligrams are common. One's life, health, and sanity depend upon accurate measurment. There are few things more horrible than accidental overdoses of psychedelic drugs. Note that because a vendor sells a packaged chemical marked as 1 gram, it is not reasonable to assume that's the mass of the contents. Many vendors intentionally or unintentionally do not weigh their products carefully. (https://www.erowid.org/psychoactives/research_chems/research_chems_faq.shtml)

*erowid: By using a liquid measurement technique, it is possible to use a 30$ scale and still measure accurately to only a few milligrams.

*erowid: Some people figure if they buy a quantity of material from a vendor or individual, the amount of material they receive is known. This Is Not The Case. For instance with legal, grey market, or research chemicals, it is not uncommon for a vendor to provide significantly more or less material than the amount ordered. One individual describes ordering 500 mg of a compound only to measure it when it arrived, finding 1000 mg instead. If s/he had assumed that the starting material was 500 mg, and proceeded to use a liquid measurement technique to measure individual doses, those doses would have been twice as strong as intended. https://www.erowid.org/psychoactives/dose/dose_info1.shtml

* NOTE: If you a looking for a digital scale that measures milligrams, it must measure to at least .001g. A milligram is 1/1000 of a gram. A scale that measures to only 0.1g will not measure milligrams accurately.

* Xorkoth: If you weigh out, say, 40mg of something on a scale that has, say, +/-3mg accuracy, then your final amount is going to be between 37 and 43mg. For a single dose of something like DOC, this is a vastly unacceptable variation. However if you put that amount in solution at 1mg/mL (or whatever concentration, it's just 1mg/mL makes the numbers easier for examples and is what I generally do so dosing small increments is easier with a 1mL syringe - I can get 100mcg accuracy), then you divide that error across all your doses. So each mL of solution would have between 0.925mg and 1.075mg, which is quite an acceptable variation for nearly anything (even LSD, where .1mL would be between 92.5mcg and 107.5mcg). And yes, to the above post, scales tend to get more accurate the more you put on them to start, until you get close to the max. For this reason, I always put the weighing tray and sometimes even an additional card or something on mine before weighing, without taring. Let's say it reads 5023mg with the tray/etc on it... then if I wanted to weigh out 15mg, I'd put substance on until the scale read 5037mg. And I always measure a few times to make sure the first one was right.

====Instruction manual====

*Never load the scale with more than the maximum capacity. Overloading the scale will permanently damage it!

*Keep your scale in a clean environment. Dust, dirt, moisture, vibration, air currents and a close distance to other electronic equipment can all cause an adverse effect on the reliability and accuracy of your scale.

*

@@ Line 29: / Line 29: @@
 *The ones that are TRULY accurate within a mg are extremely pricey, usually used by institutions or professionals.
+*bluelight:Those things are off by about 2-6mg every time. Its good for measuring things where the dose isn't as sensitive but I wouldn't try it for anything else.
+*erowid:  Tragic accidents, including freak-outs, trips to the emergency room, and even deaths, can result from inaccurately measuring doses. Crystalline materials differ in how "fluffy" they are; the volume of the same mass of material can vary dramatically and even with careful eyeballing, mistakes of 10-30 milligrams are common. One's life, health, and sanity depend upon accurate measurment. There are few things more horrible than accidental overdoses of psychedelic drugs. Note that because a vendor sells a packaged chemical marked as 1 gram, it is not reasonable to assume that's the mass of the contents. Many vendors intentionally or unintentionally do not weigh their products carefully. (https://www.erowid.org/psychoactives/research_chems/research_chems_faq.shtml)
+*erowid: By using a liquid measurement technique, it is possible to use a 30$ scale and still measure accurately to only a few milligrams.
+*erowid: Some people figure if they buy a quantity of material from a vendor or individual, the amount of material they receive is known. This Is Not The Case. For instance with legal, grey market, or research chemicals, it is not uncommon for a vendor to provide significantly more or less material than the amount ordered. One individual describes ordering 500 mg of a compound only to measure it when it arrived, finding 1000 mg instead. If s/he had assumed that the starting material was 500 mg, and proceeded to use a liquid measurement technique to measure individual doses, those doses would have been twice as strong as intended. https://www.erowid.org/psychoactives/dose/dose_info1.shtml
+* NOTE: If you a looking for a digital scale that measures milligrams, it must measure to at least .001g. A milligram is 1/1000 of a gram. A scale that measures to only 0.1g will not measure milligrams accurately.
+* Xorkoth:     If you weigh out, say, 40mg of something on a scale that has, say, +/-3mg accuracy, then your final amount is going to be between 37 and 43mg. For a single dose of something like DOC, this is a vastly unacceptable variation. However if you put that amount in solution at 1mg/mL (or whatever concentration, it's just 1mg/mL makes the numbers easier for examples and is what I generally do so dosing small increments is easier with a 1mL syringe - I can get 100mcg accuracy), then you divide that error across all your doses. So each mL of solution would have between 0.925mg and 1.075mg, which is quite an acceptable variation for nearly anything (even LSD, where .1mL would be between 92.5mcg and 107.5mcg). And yes, to the above post, scales tend to get more accurate the more you put on them to start, until you get close to the max. For this reason, I always put the weighing tray and sometimes even an additional card or something on mine before weighing, without taring. Let's say it reads 5023mg with the tray/etc on it... then if I wanted to weigh out 15mg, I'd put substance on until the scale read 5037mg. And I always measure a few times to make sure the first one was right.
+====Instruction manual====
+*Never load the scale with more than the maximum capacity. Overloading the scale  will permanently damage it!
+*Keep your scale in a clean environment. Dust, dirt, moisture, vibration, air currents and a close distance to other electronic equipment can all cause an adverse effect on the reliability and accuracy of your scale.
+*