Thank you, Nick. Good morning, everyone. Speaking on today's call will be Karen Burton, our Senior Vice President and CFO, and Dan Carestio, our President and CEO. I do have a few words of caution before we open the comments. This webcast contains time-sensitive information that is accurate only as of today. Any redistribution, retransmission, or rebroadcast of this call without the express written consent of STERIS is strictly prohibited. Some of the statements made during this review are or may be considered forward-looking statements. Many important factors could cause actual results to differ materially from those in the forward-looking statements, including, without limitation, those risk factors described in STERIS' securities filings. The company does not undertake to update or revise any forward-looking statements as a result of new information or future events or developments. STERIS' SEC filings are available through the company and on our website.
In addition, on today's call, non-GAAP financial measures, including adjusted earnings per diluted share, adjusted operating income, constant currency organic revenue growth, and free cash flow will be used. Additional information regarding these measures, including definitions, is available in our release, as well as reconciliations between GAAP and non-GAAP financial measures. Non-GAAP financial measures are presented during this call with the intent of providing greater transparency to supplemental financial information used by management and the Board of Directors in their financial analysis and operational decision-making. With those cautions, I will hand the call over to Karen.
Thank you, Julie. Good morning, everyone. It's my pleasure to be with you this morning to review the highlights of our first quarter performance. For the first quarter, total as-reported revenue grew 7%. Constant currency organic revenue grew 6% in the quarter, driven by volume as well as 190 basis points of price. Gross margin for the quarter was 46%, up 70 basis points versus the prior year. Margin expansion was driven by price and favorable productivity, which were somewhat offset by inflation. Gross tariff costs, excluding refunds, were $14 million in the first quarter. As a reminder, tariffs were $12 million in the first quarter of last year. Tariff refunds of $4 million were received in the quarter. On a year-over-year basis, net tariffs were favorable $2 million.
For clarity, tariff refunds are not being allocated to our business segments, but instead are booked in corporate to enable business segment analysis. EBIT margin for the quarter was 23.8% of revenue, an increase of 100 basis points versus the first quarter of last year. The gross margin improvement, coupled with favorable currency and operating cost discipline, drove the EBIT margin expansion in the quarter. The adjusted effective tax rate in the quarter was 25.9%, an increase of 23.5% in the first quarter of last year. The year-over-year increase was driven primarily by unfavorable discrete items. Adjusted net income in the quarter was $253.4 million. Earnings per diluted share were $2.59, an 11% increase over the prior year. Higher margins more than offset the increase in tax expense. Capital expenditures for the quarter were $87.5 million, and depreciation in amortization totaled $123.8 million.
We ended the quarter with a strong balance sheet, reflecting $1.9 billion in total debt. Gross debt to EBITDA at quarter end was approximately 1.1x, well below our targets of 2x to 2.5x. Free cash flow for the quarter was $279.6 million, down from $326.5 million in the first quarter last year. The decline in free cash was driven primarily by a lower contribution from working capital, despite improvement in net income. Share buybacks in the first quarter totaled $100 million, leaving us with $900 million under our current authorization. We also announced our 21st consecutive year of dividend increases last week with a $0.06 increase to $0.69 per quarter as we continue to prioritize dividend growth. With that, I will turn the call over to Dan for his remarks.
Thanks, Karen. Good morning, everyone. Thank you for joining us to hear more about our first quarter 2027 performance and our outlook for the remainder of the year. Karen covered the quarter at a high level. I will add some commentary on our segments.
Starting with Healthcare, constant currency organic revenue grew 6% for the first quarter. Our performance reflected stable underlying demand, while our commercial teams continue to drive meaningful growth across the Healthcare segment. The strength of our portfolio continues to enable us to help our customers navigate a complex operating environment. Our service team continued its streak of outperformance, growing 10% in the first quarter. Consumables grew 9%, benefiting from increased customer consumption, driven by share gains and procedural growth in endoscopy. Healthcare capital equipment revenue increased 1% for the quarter, with growth impacted by the timing of shipments. Orders remained solid, with 4% growth in the first quarter, and our ending backlog increased to $444 million. EBIT margins for Healthcare in the quarter increased 60 basis points to 24.8%, with volume, pricing, positive productivity, and favorable mix somewhat offset by inflation, investments in the business, and tariffs.
Turning to AST, constant currency organic revenue grew 5% for the quarter, with 6% growth in services. As anticipated against difficult comparisons, services volume remained light in the quarter. Global demand remains a bit soft as customers continue to manage down existing inventory. EBIT margins for AST were 48%, a decrease of 60 basis points from the first quarter of last year, as additional pricing was more than offset by increased depreciation and slightly lower productivity. Constant currency organic revenue increased 8% for the Life Sciences group in the quarter. Supporting that growth, capital equipment grew 17% and consumables increased 8%. Services grew 2%. Backlog at quarter end was about flat with prior year at $110 million. Margins were 42.1%, a decrease of 140 basis points as pricing and volume were more than offset by unfavorable productivity and inflation.
Before we shift gears to outlook, I want to comment on the announcement we made yesterday that we will be investing $600 million to build a new Formulated Chemistry Center of Excellence in North Carolina. As noted in our release, this is our largest investment in our history in a single manufacturing site. We will be building two facilities totaling 600,000 sq ft under roof that will include manufacturing, R&D, and distribution. The facility will produce high-performance infection prevention and contamination control chemistries used by our healthcare and pharmaceutical customers across the globe. This investment strengthens our healthcare and life sciences formulated chemistries business, which together generate more than $700 million in revenue. These products are high growth, high margin, and highly regulated. They play an essential role in helping our customers deliver safe, compliant outcomes for patients.
This investment positions us to scale with our customers, supports increasing demand, and sustains growth in these strategically important portfolios over the long term. The facility is expected to become operational in two to three years in a phased approach, beginning with distribution. Upon completion, we expect to transition the work from our St. Louis, Missouri, and Plymouth, Minnesota, chemistry manufacturing and distribution sites and close those facilities. When finalized, the Formulated Chemistry Center of Excellence will allow us to accelerate innovation, expand capacity, and optimize our U.S. chemistries manufacturing and distribution network. As a result, we announced today a restructuring program with anticipated pretax restructuring charges of approximately $55 million-$70 million, consisting of approximately $40 million-$50 million of cash expenditures and approximately $15 million-$20 million of non-cash charges. We anticipate that less than $10 million will be booked in fiscal 2027.
This investment will generate an ROIC of over 10% within three to five years of opening, and it is essential to our long-term growth and profitability. Shifting gears to outlook. Based on our first quarter results, our expectations for the remainder of the year, we are maintaining our original outlook for fiscal 2027. This includes as-reported revenue growth of 7%-8% and constant currency organic revenue growth of 6%-7% for the total company. Our fiscal 2027 earnings per share outlook is also unchanged at $11.10-$11.30, growth of 9%-11% over fiscal 2026. While the total cost of the North Carolina facility is anticipated to be $600 million, the impact on fiscal 2027 is expected to be approximately $75 million in additional capital spending. As a result, CapEx is now anticipated to be approximately $450 million in fiscal 2027.
Free cash flow is now expected to be $800 million, as the strong performance in the first quarter is helping to offset the additional CapEx spend for the year. For your modeling purposes, the investment in North Carolina will spread over the next three years. As of now, we expect the project to add approximately $350 million in capital spending into fiscal 2028 and the remaining $175 million in fiscal 2029. The project is in the early phases of development, and we will provide additional updates on timing as they become clear. Thank you to all of our associates for continuing to do what we do best, focusing on our customers and striving to do a little better each day. Thank you. That concludes our prepared remarks for the call. Operator, would you please give the instructions so we can begin the Q&A?