@rcleven I don’t know exactly how many true manufacturers there are of those bottles, probably only a few, and 100X more resellers, but I loaded up on cases of them when 510Central was still selling on Amazon, and even with the lower end, generic bottles/caps, they all seem to work pretty good.
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All the color caps work fine. Only the blacks seem to be adult proof. 510 haven’t seen them in years. All my 60ml bottles and most of 30’s are 510.
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That sounds cruel. I bet Roger Waters would have something to say about that.
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Oh yes, the good old days.
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Well, looks like you can still get to work - just start a fire under the gas tank and off you go.
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do you guys mix by weight instead than by ml? if so why?
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Session used to sell weed and powder out of his Astro Mini-van when he was going to Arts classes in College.
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Wi all guh trough dat mi bredren.
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I measure by drops: I’ve never been confident enough in localised gravity to do it by weight.
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yeah i guess it depends on the planet you are living 
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Well, I’m trying to avoid a hangover after Saturnalia - so my location, on any plane/brane. is pretty much moot. I’ll be happy to exist as an uncollapsed wavefunction for a few more days.
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@Invisible_Rasta I can only speak for myself, but I mixed by volume, in the VERY beginning of time. The amount of time, cleanup, etc., was overwhelming (not necessary).
Once I tried mixing by weight, I never looked back. I typically only use ONE syringe, just for NIC, and everything else comes out of whatever bottle it’s in. Quick, clean, accurate, with almost ZERO cleanup. Fast, and accurate.
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I miss the Astros …
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i have a minivan too 
not an astros tho
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My neighbors got one for sale. I could hook you up.
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Better than an AMC Gremlin
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Sessiindrummer answer is probbaly the most common for most of us…Drops vary from tip to tip so IME its not the most accurate when using Ultra Potent cincentrates especially
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Agreed @fidalgo_vapes. I wish it wasn’t so, because then you wouldn’t need ANYTHING, just drop, drop, drop your way to success. The bottles, tips, even the temperature OF the flavors, can and will yield different results, which just made it too unpredictable and inaccurate for me. And, like you said, it can be even worse WITH or using ultra concentrates, as the errors are compounded with the very strong concentrates and errors.
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Likewise, I mix by weight… One syringe for Nic.
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