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☛ Official ☚ The Big & Dandy Scale / Balance Thread - Part 2.000±

infantannihilator said:
I'd just like to apologize for coming across as a bit of a harsh asshole. It's just that I take offense to the notion that I am entirely blind as an infant (lol) and have not put any thought into my actions and the way I have chosen to undertake them. I did not make anything up, everything I've learned towards the effect of proper dosing was gleaned from this very thread, and I feel like I was talking to a brick wall, my words entirely being ignored when I am countered with examples of eyeing stuff out after having talked about the readability in scale error as well as my methods to mitigate these errors as much as possible even with a cheap scale. Its akin to performing basic calculus by hand and being you told to have to use tool like maple - both get the job done and will produce identical or near identical results, maple giving you a little more frill - but then being lambasted about not knowing how to properly perform the basics of bedmas (pedmas, pemdas, whatever you learned in your state/country).

I just felt like I was taken to be entirely ignorant, when in fact I have meticulously researched and made sure I am doing everything in my power to be as safe as I possibly can, within my currently limited budget and within the bounds of the substances I intend to take.

Sorry, friends.
Click to expand...

I'm not upset, and hope you aren't/weren't.

I do not accuse you of being ignorant. I do take exception when you state that a lot of people here are being ridiculous when it comes to 'obsessing' over scales and their performance. That rubs me the wrong way (and I'm sorry for that).

I asked the question about me ignoring my education because it was a rhetorical response (and perhaps an overly emotional one to your statement about people being ridiculous).

And I still stand by my comment that 2 mg can send someone to the hospital.

Peace....we're all here for the same reason.

Tom
 
Well, initially I was referring to a 2mg error over a larger dose and using the volumetric method to both minimize that error and get a more accurate dose due to the inherent scale drift - so when I said 2mg won't send you to the hospital I was using it in that context. Yes certain if you have a substance with a 1-2mg dose, an extra 2mg could very well send you to the hospital I concede.
 
Need help with calibration

Hey all,

I need help calibrating the infamous JPrecision/DIA/etc gemological scale. The pic is attached. This model has a max weight of 20g, came with two calibration weights (10g and 20g), and you put it into calibration mode by turning it off, then holding the TARE and MODE buttons until "-CAL-" appears on the screen. The only manuals I can find are for the 10g max model, and the ones that are put into calibration mode via holding only the MODE button for 10secs. Anyone have this model, or a link to the manual?

Thank you!

IMG_20130913_161428.jpg
 
Hello,

I ordered yesterday a "Dalman Carat Scale DIA-50" to replace my old Diamond scale paid 10 dollars on ebay.
Do you think it's a good scale for the price? I paid it 50 USD:
http://www.everyonedoesit.com/online_headshop/--digital-carat-scales-10g---0001g.cfm

I didn't know what to take between the Dalman and the "On Balance CT 250 Carat Scale":
http://www.zamnesia.com/digital-scale/2148-on-balance-ct-250-50-0001g.html
The price of the On Balance was 80 USD and it was possible to put an AC adaptator inside. (Do I have to change the AAA batteries several times a year? I never had to change my 2 AAA batteries in my old scale but there wasn't any backlight).

Other pictures of the scales :
https://www.cousinsuk.com/catalog/equipment/diamond-weighing-scales

Do you think I made the right choice between the two scales? It will be more accurate than my old scale?

PS : I don't need a 100 USD scale with a really good accuracy, just something to weight correctly speed/MDPV/MDMA and weed) (yes, I weight the quantity of weed to put into a joint), and my old scale was really inaccurate after 3 years of using it daily. I hope I didn't make a mistake by choosing the Dalman DIA-50...

Here is a video demonstration of the Dalman DIA50, what do you think about it?
http://youtu.be/gswjMRMfQWo

Thanks for your help !
 
I doubt there is much difference between the two, or any other inexpensive mg scale really. They all look fine. Impossible to say about the batteries, it could vary a lot depending on the circuitry.

I weigh my weed too - it makes it a lot easier to compare batches objectively and know how much I want.
 
I just got the Dalman Carat Scale DIA-50. Everything is made of cheap plastic. But the real issue is the auto shut off, if I want to weight powder and add a little amount of powder it auto shut offreally quickly...
What can I do to change that? thanks
 
Hello,

I sold my Dalman to buy a new scale.
First thing do you know an european website with good prices for scales? Shipping fees from US websites are too hig :-/ (I live in France).
Then can you tell me if one of these scales are good?

- American-Weigh-GPR-20-Gemini-PRO-Digital : http://www.ebay.fr/itm/American-Wei...2190?pt=AU_Kitchen_Scales&hash=item232f514b3e

- New Gemoro Platinum® PCT Pocket Carat Scales : http://www.southernjewelrynews.com/...a-precision-platinumr-pct-pocket-carat-scales / http://www.sykessler.com/EQUIPMENT/Weighing/Platinum®-PCT101-100ct-x-0.005ct.html

- Jennings Mack 20 / Jennings JSVG20 : http://www.e-scales.co.uk/laborator...16165160121.html#/jennings_jmack-20g_x_0_002g / http://www.jenningsscales.com/images/jsvg.jpg

- 1.7" LCD High-Precision Digital Jewelry Scale - 50g/0.001g (4 x AAA) : http://dx.com/p/1-7-lcd-high-precision-digital-jewelry-scale-50g-0-001g-4-x-aaa-101011

Or investing in a GemPro250 ?

Thanks !
 
The GemPro 250 is better than all of those scales. It tends to drift less than the other scales you listed, it has both battery and a power cord for power, it has a balance bubble built into make sure its a flat surface that its sitting on and the feet adjust to make sure its level as well, it has a wind shield (very important with small dose measurements), and it is reliable at +/- 2mg 100% of the time, +/- 1mg around 80% of the time (note that like the other scales, it is best to put your powder in a capsule as it doesn't have the sensitivity of a laboratory scale to measure at +/- 1mg - weigh your empty capsule, take the substance and put it in the capsule, subtract the weight of the capsule from the result (taring the capsule is not a good idea, it tends to cause drifting on all cheap electronic scales)) - I wouldn't trust the other, cheaper scales, to be anything better than +/- 2mg but I would say +/- 3mg to be on the safe side.

If you have the money, invest in a professional scale. I don't know about eBay over there, but you can get used analytical balances on eBay here sometimes at a steal. I got my +/- 200mcg scale for 80 bucks from a local person on eBay as a liquidation from a pharmaceutical company that went bankrupt downtown.
 
Can anyone tell me how to dose 250mg of 4-aco-dmt into 15mg doses without a scale? I've heard 4-aco-dmt can't be put into solution and my scale was taken because my roomates thought it was for cocaine... And the calibration pieces were missing anyway.
 
So after reading through this thread I think I've managed to narrow down the options for my next scale purchase (upgrading from an AWS Gemini-20) to one of these:

Tanita 1230 - $190 on Amazon
GemPro 250 - $116 on Amazon (with Prime!)

Now I am aware that both of these scales -- while each representing a definite level up from the one I currently have -- can nevertheless be considered the same as far as their overall degree of (in)accuracy goes, at least in the sense that neither one of them really can be said to possess the full capabilities required to reliably measure out the <10mg amounts that I'd ideally like to be able to handle with total confidence. This is all perfectly fine as I fully intend to own a shiny new analytical balance one day (hopefully sometime in the near future!). However, in that I am currently just a student with limited means, right now I'd prefer to acquire something that is at once relatively affordable, portable and I guess more of a quality stepping stone than an ultimate end. This means that if the only advantage that the significantly more expensive Tanita offers over the GemPro is a marginal degree of accuracy that will just one day end up being superseded by a scale more purposed for accuracy over, say, portability, I would prefer going with the GemPro. But if there can really be said to be a notable qualitative difference in either the quality of the construction/durability, end-user experience, or even the overall aesthetic design (I am a bit of a snob when it comes to these things, after all :P), I really have no problem shelling out the extra $75 for the Tanita. As far as I can tell, the major advantage the GemPro offers over the Tanita other than its price is its AC adapter (which may or may not be that big of a deal), which definitely inclines me towards it, but I am more than open to having my mind changed.

Anyone want to help me make the final decision?
 
Get the GemPro 250. I had the GemPro 250 and it actually is a rather reliable scale as long as you use a tray or a capsule on it. I highlighted some of the additional benefits of the GemPro above.

I compared it with my DI SI-234 (http://www.coleparmer.com/buy/produ...-g-x-0-1-mg-230-vac-internal-calibration.html) and found that it was reliably +/- 2mg 100% of the time and 80% of the time it was +/- 1mg as advertised, the key being to make sure that measuring less than 50mg to use a tray or empty capsule to get it closer to +/- 1mg.

I often used the GemPro over the SI-234 just because it was easier and still quite accurate when I didn't need the +/- .1mg accuracy of the SI-234.

It makes a huge difference having the AC adapter by the way. When the batteries in these scales get low, their accuracy is drastically affected before you get a warning that the batteries are dying.
 
Actually I don't use RC, or not very often, I only use products that weight at least 10 or 15 mg.
But I use my actual scale daily since years, so I don't search 1 or 2 mg accuracy but a good, solid quality scale, with durability and fiability, a scale that will last me at least 10 years or more...
I live in France so for the Gempro I don't have a warranty (at least I am not sure, do you know if this scale have a international warranty?
Also the best price I can have with shipping fees is USD 158.94.
Where is this scale fabricated? China or USA?
What is the quality of the calibration weight that comes with the scale? Should I by a better calibration weight? Also there is only a 20 grams weight with it, do you think I should buy also a 50 grams weight?
Finally, what is the weight of the scale?
I also see that some people have troubles with this scale and since I live in France I don't think I can send it to warranty, at least for a reasonnable price... :
http://www.amazon.com/My-Weigh-GemP...dp_top_cm_cr_acr_txt?ie=UTF8&showViewpoints=1
http://www.oldwillknottscales.com/my-weigh-gempro-250.html
Apparently a lot of people had received a scale that doesn't work (dead new scale) because of leak of quality control, and AC power supply isn't good, then apparently everyone have an inconsistent zeroing... What do you think about it? Since I live in France I can't allow me to receive a scale that doesn't work, especially for this price...

I can also have a Jennings Mack 20 Compact Digital Jewelry Scale for USD 76.58 (half the price of the gempro), and apparently it's a very good scale for the price, almost no complaints :
Reviews :
http://www.oldwillknottscales.com/jennings-jscale-mack-20.html#reviews
Where is the Jennings made, and what is his weight?


Finally, what advices can you give me after reading my needs?


Thank you for your help !
 
MagickalKat777 said:
Get the GemPro 250. I had the GemPro 250 and it actually is a rather reliable scale as long as you use a tray or a capsule on it. I highlighted some of the additional benefits of the GemPro above.

I compared it with my DI SI-234 (http://www.coleparmer.com/buy/produ...-g-x-0-1-mg-230-vac-internal-calibration.html) and found that it was reliably +/- 2mg 100% of the time and 80% of the time it was +/- 1mg as advertised, the key being to make sure that measuring less than 50mg to use a tray or empty capsule to get it closer to +/- 1mg.

I often used the GemPro over the SI-234 just because it was easier and still quite accurate when I didn't need the +/- .1mg accuracy of the SI-234.

It makes a huge difference having the AC adapter by the way. When the batteries in these scales get low, their accuracy is drastically affected before you get a warning that the batteries are dying.
Click to expand...

got it, thanks man!
 
And what do you think of this scale?

http://www.goodluckbuy.com/60g-0-001g-portable-diamond-carat-scale-ha2-60a-pocket-carat-scale.html

Chinese scales are very affordable!!!

And also this one too seems very similar to Gempro250 but a lot cheaper !
http://fundar.en.alibaba.com/produc...M_Sensor_jewelry_Digital_Bench_Top_Scale.html
What do you think? Around 50 USD !

Carat scale, etalon weight as gift, high precision, reliable results
• Item: APTP449
• Capacity/graduation: 100G/0.001G 100G/0.002G 50G/0.001G 500g/0.01g
• LCD display
• Backlight
• Simple counting function
• Tare function
• Automatic power-off function
• Shape Size (LxWxHmm): 10*140*54mm
• Selectable weighing units (g/ ct/ lb/ oz/ dr/ gn/ ozt/ dwt/ MM/ tl.J/ tl.T/ tl.H/ t 13units)
• Support AC / DC power supply or 4*AAA bettery (Not included )
• Gross weight: 0.34kg
• Packing: Carton, color box, gift box
• Pan size: 70 mm
• Repeatability(g): +_1D
• Linearity(g): 0.1%
• Ambient temperature(centigrade): 17-29 degree
• LCD with blue backlight
• Response time in 2 seconds
• overload protection function
• Warm-up(m): 3 minutes

• Package Contents:
• - Digital scale x 1
• - User manual x 1
• - Power adapter x 1
Click to expand...
 
Last edited by a moderator:
Hey Rafael, I don't know if you were looking to spend a certain amount for a very "high quality" milligram scale, but I still swear by my Gemini-20. It is accurate to +-1 milligram according to the specs, but it is more like accurate to +-3mg and the max capacity is 20 grams. From my experience, 10 milligrams is the smallest amount of powder/substance that you can actually accurately weigh with this scale. Beneath 10 milligrams it is hard to make it register on the screen. I have weighed 14, 28, 36, 48 milligram quantities numerous times with no problems. For 25 bucks plus shipping, it is a steal. I still didn't have to replace the batteries that came with it!

http://www.amazon.com/American-Weig...F8&qid=1385173103&sr=8-1&keywords=gemini+.001
 
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