Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2018

Percentage of Revenue from Significant Customers

Revenue from significant customers as a percentage of the Company’s total revenue is as follows:

	Three months ended June 30,						Six months ended June 30,
	2018			2017			2018			2017
MilliporeSigma		18	%		19	%		17	%		20	%
GE Healthcare		14	%		28	%		16	%		28	%

Total Revenue

Percentage by Geographic Area or Significant Customers

The following table represents the Company’s total revenue by geographic area (based on the location of the customer):

	Three months ended June 30,						Six months ended June 30,
	2018			2017			2018			2017
North America		47	%		38	%		46	%		38	%
Europe		41	%		50	%		42	%		52	%
Asia and Australia		12	%		11	%		12	%		9	%
Other		—			1	%		—			1	%
Total		100	%		100	%		100	%		100	%

Accounts Receivable

Percentage by Geographic Area or Significant Customers

Significant accounts receivable balances as a percentage of the Company’s total trade accounts receivable are as follows:

	June 30, 2018			December 31, 2017
GE Healthcare		17	%		11	%
MilliporeSigma		14	%		19	%