v3.21.1
Revenue Recognition
 3 Months Ended
Mar. 31, 2021
Revenue from Contract with Customer [Abstract]  
Revenue Recognition Revenue Recognition
Revenue by Source
Three Months Ended March 31,
20212020
Instruments$882,000 $534,000 
Consumables1,167,000 449,000 
Total product revenue2,049,000 983,000 
Service and other1,119,000 153,000 
Total revenue$3,168,000 $1,136,000 

Revenue by Geographic Location
Three Months Ended March 31,
20212020
$%$%
North America$1,498,000 47 %$726,000 64 %
EMEIA1,587,000 50 %390,000 34 %
Asia Pacific83,000 3 %20,000 2 %
Total$3,168,000 100 %$1,136,000 100 %

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 March 31, 2021 and 2020, the United States represented 44.8% and 63.9% of total revenue.
Remaining Performance Obligations

As of March 31, 2021, the estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied was $409,000. These remaining performance obligations primarily relate to extended warranty and support and maintenance obligations. The Company expects to recognize approximately 64.8% of this amount as revenue during the remainder of 2021, 31.1% in 2022, and 4.1% in 2023. Warranty revenue is included in Service and other revenue.
The Company recognized revenue of $156,885 and $127,000 during the three months ended March 31, 2021 and 2020, respectively, which was included in the contract liability balance at the end of the previous year.