v3.20.2
Revenue Recognition
 9 Months Ended
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]  
Revenue Recognition Revenue Recognition
Revenue by Source
Three Months Ended September 30,Nine Months Ended September 30,
2020201920202019
Instruments$724,000 $2,370,000 $1,487,000 $5,262,000 
Consumables856,000 792,000 2,016,000 1,608,000 
Total product revenue1,580,000 3,162,000 3,503,000 6,870,000 
Service and other616,000 151,000 1,010,000 470,000 
Total revenue$2,196,000 $3,313,000 $4,513,000 $7,340,000 
Service and other for the three and nine months includes diagnostics for the period from August 21, 2020 through September 30, 2020.
Revenue by Geographic Location
Three Months Ended September 30,Nine Months Ended September 30,
2020201920202019
$%$%$%$%
North America$874,000 40 %$1,831,000 56 %$2,388,000 53 %$4,050,000 55 %
EMEIA1,204,000 55 %943,000 28 %1,908,000 42 %2,367,000 32 %
Asia Pacific118,000 5 %539,000 16 %217,000 5 %923,000 13 %
Total$2,196,000 100 %$3,313,000 100 %$4,513,000 100 %$7,340,000 100 %

The table above provides revenue from contracts with customers by source and geographic region (based on the customer's billing address) on a disaggregated basis. North America consists of the United States and Canada. EMEIA consists of Europe, the Middle East, India and Africa. Asia Pacific includes China, Japan, South Korea, Singapore and Australia. For the three months ended September 30, 2020 and 2019, the United States represented 40% and 48% of total revenue, and for the nine months ended September 30, 2020 and 2019, 51% and 52%, respectively.
Remaining Performance Obligations

As of September 30, 2020, the estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied was $500,000. These remaining performance obligations primarily relate to extended warranty and support and maintenance obligations. The Company expects to recognize approximately 27.6% of this amount as revenue during the remainder of 2020, 61.2% in 2021, 7.6% in 2022, and 3.6% in 2023. Warranty revenue is included in Service and other revenue.
The Company recognized revenue of $66,000 and $39,000 during the three months ended September 30, 2020 and 2019, respectively, and revenue of $299,000 and $117,000 during the nine months ended September 30, 2020 and 2019, respectively, which was included in the contract liability balance at the end of the previous year.
Concentrations
As of September 30, 2020 and December 31, 2019, one customer represented 9% and 10%, respectively, of the Company's accounts receivable balance.