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Note N - Concentrations
12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Concentration Risk Disclosure [Text Block]
NOTE N-- CONCENTRATIONS
 
Milestone Scientific has informal arrangements with
third
-party US manufacturers of the STA,
CompuDent
and
CompuMed
devices, pursuant to which they manufacture these products under specific purchase orders but without any long-term contract or minimum purchase commitment. Consequently, advances on contracts have been classified as current at
December 31, 2019 
and
2018.
  The termination of the manufacturing relationship with any of these manufacturers could have a material adverse effect on Milestone Scientific’s ability to produce and sell its products. Although alternate sources of supply exist, and new manufacturing relationships could be established, Milestone Scientific would need to recover its existing tools or have new tools produced. Establishment of new manufacturing relationships could involve significant expense and delay. Any curtailment or interruption of the supply, because of termination of such a relationship, would have a material adverse effect on Milestone Scientific’s financial condition, business and results of operations.              
  
For the
twelve
months ended
December
31,2019
an aggregate of approximately
53%
of the Company’s net product sales were from
one
US Distributor. For the
twelve
months ended
December 31, 2018,
an aggregate of approximately
53%
of Wand Dental’s net product sales were to
two
customers/distributors (
one
of which, Milestone China, is a related party),
43%
and
10%
respectively.
 
Accounts receivable for the major customer/distributors amounted to approximately or
77%,
of Milestone Scientific's gross accounts receivable as of
December 31, 2019. 
Accounts receivable for the major customer/distributors amounted to approximately or
82%,
or
49%
 and
33%
of Milestone Scientific's gross accounts receivable as of
December 31, 2018.
As of
December 31, 2018, 
Milestone China owed
$1,917,990
to Milestone Scientific. Due to the delinquent nature of the scheduled payments and Milestone China’s further liquidity constraints, Milestone Scientific reduced accounts receivable, related party and deferred revenue, related party by
$1,817,990
at
December 31, 2018.
Additionally, Milestone Scientific recorded a reserve of
$1,250,928
against the associated deferred cost, related party. 
 
Business interruptions, including any interruptions resulting from COVID-
19,
(see Note R-
Subsequent Events)
could significantly disrupt our operations and could have a material adverse impact on our business. All of our employees are located in the U.S. In addition to our employees, we rely on (i) distributors, agents and
third
-party logistics providers in connection with product sales and distribution and (ii) raw material and component suppliers in the U.S., Europe and China. If we, or any of these
third
party partners encounter any disruptions to our or their respective operations or facilities, or if we or any of these
third
party partners were to shut down for any reason, including by fire, natural disaster, such as a hurricane, tornado or severe storm, power outage, systems failure, labor dispute, pandemic or other unforeseen disruption, then we or they
may
be prevented or delayed from effectively operating our or their business, respectively.