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REVENUE RECOGNITION (Tables) | 9 Months Ended
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Sep. 30, 2021
REVENUE RECOGNITION |
Disaggregation of revenue by product line | ​
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​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020
Consumables | ​ | $ | 465,829 | ​ | $ | 379,177 | ​ | $ | 1,375,567 | ​ | $ | 1,118,688
Equipment | ​ |  | 340,625 | ​ |  | 289,711 | ​ |  | 1,014,362 | ​ |  | 842,918
Net sales | ​ | $ | 806,454 | ​ | $ | 668,888 | ​ | $ | 2,389,929 | ​ | $ | 1,961,606

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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